Date   

Re: Regreasing an Astro-Physics mount

George
 

Ron,

 

All the information that you seek is in the Greasing Instructions that come with the Grease Kit.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Ron Kramer
Sent: Wednesday, June 10, 2020 3:33 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Regreasing an Astro-Physics mount

 

yeah that's a given - thanks for the heads up.  Anything else due to the springs?  see previous questions. 

 

 

On Wed, Jun 10, 2020 at 4:06 PM Fernando Proietti <fernandoaproietti@...> wrote:

Just in case: I do not know if it is "common, well known knowledge". I just learnt recently from George:

 

George

qua., 13 de mai. 17:18

para mim

""Fernando,

 

If the motor box is removed for greasing the wheel, or if the worm is turned manually, then yes, it would need a new PE curve or disable PEM.

 

Regards,

 

George""

 

 

Em qua., 10 de jun. de 2020 às 16:56, Fernando Proietti via groups.io <fernandoaproietti=gmail.com@groups.io> escreveu:

+ 1 !!!

 

Em qua., 10 de jun. de 2020 às 15:42, Ron Kramer <ronkramer1957@...> escreveu:

AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).

 

 

On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:

Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul


 

--


 

--


Re: M83 - Southern Pinwheel in Centaurus

Roland Christen
 

That is a very nice one!

Rolando


-----Original Message-----
From: Ron Kramer <ronkramer1957@...>
To: main@ap-gto.groups.io
Sent: Wed, Jun 10, 2020 3:35 pm
Subject: Re: [ap-gto] M83 - Southern Pinwheel in Centaurus

Wish I could see that one from Michigan. My nearest cousin.
LIGHTS only, OSC, stacked in APP then levels and color done in pshop. 
https://www.flickr.com/photos/158199519@N08/49807321776/ 
MACH1 - RASA 11,  ASI094, IDAS D2 



Re: Regreasing an Astro-Physics mount

Roland Christen
 

As far as springs, nothing to worry about on your gearbox. Just use the lever to back off the worm, then remove the 3 screws that hold the gearbox to the mount axis. That's it in a nutshell.

Of course once you back off the worm, the RA axis is free to move and can swing wildly if it is unbalanced. Make sure you are in park3 position. I usually pull one of the counterweights down to the farthest position so that more than compensates for the scope weight. That way the RA axis will naturally stay put in Park3 even when the worm is backed off or the gearbox is fully removed.

Rolando



-----Original Message-----
From: Ron Kramer <ronkramer1957@...>
To: main@ap-gto.groups.io
Sent: Wed, Jun 10, 2020 3:33 pm
Subject: Re: [ap-gto] Regreasing an Astro-Physics mount

yeah that's a given - thanks for the heads up.  Anything else due to the springs?  see previous questions. 


On Wed, Jun 10, 2020 at 4:06 PM Fernando Proietti <fernandoaproietti@...> wrote:
Just in case: I do not know if it is "common, well known knowledge". I just learnt recently from George:

George

qua., 13 de mai. 17:18
para mim
""Fernando,
 
If the motor box is removed for greasing the wheel, or if the worm is turned manually, then yes, it would need a new PE curve or disable PEM.
 
Regards,
 
George""
 

Em qua., 10 de jun. de 2020 às 16:56, Fernando Proietti via groups.io <fernandoaproietti=gmail.com@groups.io> escreveu:
+ 1 !!!

Em qua., 10 de jun. de 2020 às 15:42, Ron Kramer <ronkramer1957@...> escreveu:
AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul


--


--


Re: M83 - Southern Pinwheel in Centaurus

Ron Kramer
 

Wish I could see that one from Michigan. My nearest cousin.
LIGHTS only, OSC, stacked in APP then levels and color done in pshop. 
https://www.flickr.com/photos/158199519@N08/49807321776/ 
MACH1 - RASA 11,  ASI094, IDAS D2 


On Wed, Jun 10, 2020 at 4:21 PM REDIGER-LIZLOV Didier <rediger@...> wrote:
very nice one !

Didier REDIGER-LIZLOV


De : main@ap-gto.groups.io <main@ap-gto.groups.io> de la part de uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io>
Envoyé : mercredi 10 juin 2020 04:46
À : main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Objet : [ap-gto] M83 - Southern Pinwheel in Centaurus
 
I recently uploaded this image which I took during a period of clear skies (but bad seeing) on the island of Hawaii this past March. I was testing out new pointing/tracking software with the keypad and used my 1600 encoder mount with the 175 EDF refractor and my trusty QSI683 camera. I have a few more images of other galaxies which I plan to post.


This spiral was really nice visually in the 175 refractor, and also in Chris Erickson's 130GT refractor which he generously loaned to me. We had a star party several days later to which we invited a number of locals and one professional astronomer (from Keck observatory) who was kept busy by the guests explaining stuff they saw in the eyepieces. That day we also had a wonderful house blessing, Hawaiian style, which included the observatory, where the Kapuna sprinkled the observatory, scope and mount (oops).

Hawaii Island can have incredibly good seeing and exceptionally clear dark skies, but depending on the trade winds can also have very poor seeing at times. When we came at the end of February, we learned that the major observatories on Mauna Kea had just had a horrible winter with most times no clear skies available. It was their worst winter season in memory. Fortunately by early March we a had a clear spell, but of course the Moon came to spoil it for deep sky imaging. Nevertheless, it is really cool to be able to swim and snorkel during the day and see Orion cresting overhead, in short sleeve weather at night.

Rolando




Re: M83 - Southern Pinwheel in Centaurus

Roland Christen
 

Thank you all.

Rolando



-----Original Message-----
From: REDIGER-LIZLOV Didier <rediger@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Wed, Jun 10, 2020 3:21 pm
Subject: Re: [ap-gto] M83 - Southern Pinwheel in Centaurus

very nice one !

Didier REDIGER-LIZLOV


De : main@ap-gto.groups.io <main@ap-gto.groups.io> de la part de uncarollo2 <chris1011@...> via groups.io <chris1011@...>
Envoyé : mercredi 10 juin 2020 04:46
À : main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Objet : [ap-gto] M83 - Southern Pinwheel in Centaurus
 
I recently uploaded this image which I took during a period of clear skies (but bad seeing) on the island of Hawaii this past March. I was testing out new pointing/tracking software with the keypad and used my 1600 encoder mount with the 175 EDF refractor and my trusty QSI683 camera. I have a few more images of other galaxies which I plan to post.

https://www.astrobin.com/full/2qta6a/0/?nc=Uncarollo&real=&mod=

This spiral was really nice visually in the 175 refractor, and also in Chris Erickson's 130GT refractor which he generously loaned to me. We had a star party several days later to which we invited a number of locals and one professional astronomer (from Keck observatory) who was kept busy by the guests explaining stuff they saw in the eyepieces. That day we also had a wonderful house blessing, Hawaiian style, which included the observatory, where the Kapuna sprinkled the observatory, scope and mount (oops).

Hawaii Island can have incredibly good seeing and exceptionally clear dark skies, but depending on the trade winds can also have very poor seeing at times. When we came at the end of February, we learned that the major observatories on Mauna Kea had just had a horrible winter with most times no clear skies available. It was their worst winter season in memory. Fortunately by early March we a had a clear spell, but of course the Moon came to spoil it for deep sky imaging. Nevertheless, it is really cool to be able to swim and snorkel during the day and see Orion cresting overhead, in short sleeve weather at night.

Rolando


Re: Regreasing an Astro-Physics mount

Ron Kramer
 

yeah that's a given - thanks for the heads up.  Anything else due to the springs?  see previous questions. 


On Wed, Jun 10, 2020 at 4:06 PM Fernando Proietti <fernandoaproietti@...> wrote:
Just in case: I do not know if it is "common, well known knowledge". I just learnt recently from George:

George

qua., 13 de mai. 17:18
para mim

""Fernando,

 

If the motor box is removed for greasing the wheel, or if the worm is turned manually, then yes, it would need a new PE curve or disable PEM.

 

Regards,

 

George""

 


Em qua., 10 de jun. de 2020 às 16:56, Fernando Proietti via groups.io <fernandoaproietti=gmail.com@groups.io> escreveu:
+ 1 !!!

Em qua., 10 de jun. de 2020 às 15:42, Ron Kramer <ronkramer1957@...> escreveu:
AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul



--




Re: Mach1 problem please assist

 

Ron,

 

Now that our production staff has returned, the turnaround time for repairs is pretty quick. There is no standard cost for a “ tune up” since it depends on what is involved and if parts have to be replaced.

 

Try regreasing first and contact us again if you can’t resolve the issue.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Ron Kramer
Sent: Wednesday, June 10, 2020 1:33 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach1 problem please assist

 

I'm about to try to re-grease - I'll see if I can see something during inspection.  Is swapping the worm something easy I can do at home? 
I don't want to do anything complicated. I don't believe I've nicked a gear - I only use park3.  But it has come against the pier during a few 3-4 occasions? Would that do anything?

How much does it cost to send it in for a tune up?  HOW LONG would I be without it?  I'm near in Grand Rapids, MI.
I'll look for a clump of anything in the worm teeth.  If I send it in I don 't want it waiting for weeks/days. What is time frame? 

I ordered the grease, I'll see how that goes.

 

 

On Tue, Jun 9, 2020 at 7:51 PM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:

Forget backlash in RA. There is no such thing. RA always tracks so it never reverses. Backlash does not enter into tracking.

 

You may have damaged your worm teeth when you backed off the worm to do a fine balance. You may have forgotten to do it only in the Park3 position. If that's the case, the worm may have a nick in the teeth and it will show up as a repeating pattern once every 6.4 minutes.

 

Rolando

 

 

 

-----Original Message-----
From: Ron Kramer <ronkramer1957@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 9, 2020 3:30 pm
Subject: [ap-gto] Mach1 problem please assist

My mach1 is about 2.5 years old.  I was getting awesome guiding with a total rms error of .24 arc sec.  

Winter came and went and this spring it's been horrible.  like  1.4.   My image scale is about 1.69 so I lived with that for a while, but lately

the RA is  KICKING in almost a timely fashion.  One of these kicks makes double stars.  Around 1/2 my subs have to be deleted.

Nothing I have tried to far has fixed it.

I will include the log from a couple nights ago to show what I mean. 

I did a new calibration - then a guide assistant for a while... then set recommendations and let it guide a while.
You'll see   RA  kicking like a mule in a rather evenly timed fashion!?!  

I would so appreciate help with this.  Someone in PHD said make sure the mount software/HC doesn't have backlash on.  

I DO NOT USE or own a HC and I don't know of any BackLash setting in APCC pro.  I'm going nuts. 

 

 


 

--


Re: M83 - Southern Pinwheel in Centaurus

REDIGER-LIZLOV Didier
 

very nice one !

Didier REDIGER-LIZLOV


De : main@ap-gto.groups.io <main@ap-gto.groups.io> de la part de uncarollo2 <chris1011@...> via groups.io <chris1011@...>
Envoyé : mercredi 10 juin 2020 04:46
À : main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Objet : [ap-gto] M83 - Southern Pinwheel in Centaurus
 
I recently uploaded this image which I took during a period of clear skies (but bad seeing) on the island of Hawaii this past March. I was testing out new pointing/tracking software with the keypad and used my 1600 encoder mount with the 175 EDF refractor and my trusty QSI683 camera. I have a few more images of other galaxies which I plan to post.

https://www.astrobin.com/full/2qta6a/0/?nc=Uncarollo&real=&mod=

This spiral was really nice visually in the 175 refractor, and also in Chris Erickson's 130GT refractor which he generously loaned to me. We had a star party several days later to which we invited a number of locals and one professional astronomer (from Keck observatory) who was kept busy by the guests explaining stuff they saw in the eyepieces. That day we also had a wonderful house blessing, Hawaiian style, which included the observatory, where the Kapuna sprinkled the observatory, scope and mount (oops).

Hawaii Island can have incredibly good seeing and exceptionally clear dark skies, but depending on the trade winds can also have very poor seeing at times. When we came at the end of February, we learned that the major observatories on Mauna Kea had just had a horrible winter with most times no clear skies available. It was their worst winter season in memory. Fortunately by early March we a had a clear spell, but of course the Moon came to spoil it for deep sky imaging. Nevertheless, it is really cool to be able to swim and snorkel during the day and see Orion cresting overhead, in short sleeve weather at night.

Rolando


Re: Regreasing an Astro-Physics mount

Fernando Proietti
 

Just in case: I do not know if it is "common, well known knowledge". I just learnt recently from George:

George

qua., 13 de mai. 17:18
para mim

""Fernando,

 

If the motor box is removed for greasing the wheel, or if the worm is turned manually, then yes, it would need a new PE curve or disable PEM.

 

Regards,

 

George""

 


Em qua., 10 de jun. de 2020 às 16:56, Fernando Proietti via groups.io <fernandoaproietti=gmail.com@groups.io> escreveu:

+ 1 !!!

Em qua., 10 de jun. de 2020 às 15:42, Ron Kramer <ronkramer1957@...> escreveu:
AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul



--


Re: Regreasing an Astro-Physics mount

Fernando Proietti
 

+ 1 !!!

Em qua., 10 de jun. de 2020 às 15:42, Ron Kramer <ronkramer1957@...> escreveu:

AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul



--


Re: Regreasing an Astro-Physics mount

Ron Kramer
 

PS  searching the site for  re-greasing  shows no grease and LOTS OF NON GREASE RELATED HARDWARE? 


On Wed, Jun 10, 2020 at 2:57 PM Ron Kramer <ronkramer1957@...> wrote:
Looking on the AP website - I can't find the grease kit.  = (     SEARCH for not reveal it when searching  Grease. 
IT's a HUGE tube on amazon for 22.  I suspect we'd use 1/10 of that in a life time?
I accidentally ordered MS version in a small kit on Amazon which now will be worthless... as I read the "S" version is not recommended.


On Wed, Jun 10, 2020 at 2:42 PM Ron Kramer <ronkramer1957@...> wrote:
AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul



--


--



Re: Regreasing an Astro-Physics mount

Dean Jacobsen
 

Just give them a call Ron, that is what I did when I needed the grease kit.  You can even talk to one of their experts to get you started on the right track.
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Regreasing an Astro-Physics mount

Ron Kramer
 

Looking on the AP website - I can't find the grease kit.  = (     SEARCH for not reveal it when searching  Grease. 
IT's a HUGE tube on amazon for 22.  I suspect we'd use 1/10 of that in a life time?
I accidentally ordered MS version in a small kit on Amazon which now will be worthless... as I read the "S" version is not recommended.


On Wed, Jun 10, 2020 at 2:42 PM Ron Kramer <ronkramer1957@...> wrote:
AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul



--



Re: Regreasing an Astro-Physics mount

Ron Kramer
 

AGREE - I have the spring loaded mesh units and wonder if there are tricks or troubles to watch out for?  (To now loose spring tension or mess it up).


On Wed, Jun 10, 2020 at 3:30 AM DiscoDuck <montagoo@...> wrote:
Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul




Re: Mach1 problem please assist

Cheng-Yang Tan
 

Hi Ron,
   If you plan to re-grease, do you mind taking photos of the process. It'll help owners of the Mach1GTO out. I chickened out after reading the regreaing instructions -- I think I need the comic book version :)

cytan

On Wednesday, June 10, 2020, 01:33:17 PM CDT, Ron Kramer <ronkramer1957@...> wrote:


I'm about to try to re-grease - I'll see if I can see something during inspection.  Is swapping the worm something easy I can do at home? 
I don't want to do anything complicated. I don't believe I've nicked a gear - I only use park3.  But it has come against the pier during a few 3-4 occasions? Would that do anything?

How much does it cost to send it in for a tune up?  HOW LONG would I be without it?  I'm near in Grand Rapids, MI.
I'll look for a clump of anything in the worm teeth.  If I send it in I don 't want it waiting for weeks/days. What is time frame? 
I ordered the grease, I'll see how that goes.


On Tue, Jun 9, 2020 at 7:51 PM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
Forget backlash in RA. There is no such thing. RA always tracks so it never reverses. Backlash does not enter into tracking.

You may have damaged your worm teeth when you backed off the worm to do a fine balance. You may have forgotten to do it only in the Park3 position. If that's the case, the worm may have a nick in the teeth and it will show up as a repeating pattern once every 6.4 minutes.

Rolando



-----Original Message-----
From: Ron Kramer <ronkramer1957@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 9, 2020 3:30 pm
Subject: [ap-gto] Mach1 problem please assist

My mach1 is about 2.5 years old.  I was getting awesome guiding with a total rms error of .24 arc sec.  
Winter came and went and this spring it's been horrible.  like  1.4.   My image scale is about 1.69 so I lived with that for a while, but lately
the RA is  KICKING in almost a timely fashion.  One of these kicks makes double stars.  Around 1/2 my subs have to be deleted.
Nothing I have tried to far has fixed it.
I will include the log from a couple nights ago to show what I mean. 
I did a new calibration - then a guide assistant for a while... then set recommendations and let it guide a while.
You'll see   RA  kicking like a mule in a rather evenly timed fashion!?!  
I would so appreciate help with this.  Someone in PHD said make sure the mount software/HC doesn't have backlash on.  
I DO NOT USE or own a HC and I don't know of any BackLash setting in APCC pro.  I'm going nuts. 
 
 



--


Re: Mach1 problem please assist

Ron Kramer
 

I'm about to try to re-grease - I'll see if I can see something during inspection.  Is swapping the worm something easy I can do at home? 
I don't want to do anything complicated. I don't believe I've nicked a gear - I only use park3.  But it has come against the pier during a few 3-4 occasions? Would that do anything?

How much does it cost to send it in for a tune up?  HOW LONG would I be without it?  I'm near in Grand Rapids, MI.
I'll look for a clump of anything in the worm teeth.  If I send it in I don 't want it waiting for weeks/days. What is time frame? 
I ordered the grease, I'll see how that goes.


On Tue, Jun 9, 2020 at 7:51 PM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
Forget backlash in RA. There is no such thing. RA always tracks so it never reverses. Backlash does not enter into tracking.

You may have damaged your worm teeth when you backed off the worm to do a fine balance. You may have forgotten to do it only in the Park3 position. If that's the case, the worm may have a nick in the teeth and it will show up as a repeating pattern once every 6.4 minutes.

Rolando



-----Original Message-----
From: Ron Kramer <ronkramer1957@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 9, 2020 3:30 pm
Subject: [ap-gto] Mach1 problem please assist

My mach1 is about 2.5 years old.  I was getting awesome guiding with a total rms error of .24 arc sec.  
Winter came and went and this spring it's been horrible.  like  1.4.   My image scale is about 1.69 so I lived with that for a while, but lately
the RA is  KICKING in almost a timely fashion.  One of these kicks makes double stars.  Around 1/2 my subs have to be deleted.
Nothing I have tried to far has fixed it.
I will include the log from a couple nights ago to show what I mean. 
I did a new calibration - then a guide assistant for a while... then set recommendations and let it guide a while.
You'll see   RA  kicking like a mule in a rather evenly timed fashion!?!  
I would so appreciate help with this.  Someone in PHD said make sure the mount software/HC doesn't have backlash on.  
I DO NOT USE or own a HC and I don't know of any BackLash setting in APCC pro.  I'm going nuts. 
 
 




Re: Regreasing an Astro-Physics mount

DiscoDuck
 

Hi Rolando,
Thanks for that. I'd love to see a quick video of a Mach1 gearbox being removed from the mount if possible. (I have latest version - one of the last Mach1 batch).
Regards,
Paul


Re: M83 - Southern Pinwheel in Centaurus

Roland Christen
 

Link to data:
https://www.astrobin.com/2qta6a/


-----Original Message-----
From: uncarollo2 <chris1011@...> via groups.io <chris1011@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Sent: Tue, Jun 9, 2020 9:46 pm
Subject: [ap-gto] M83 - Southern Pinwheel in Centaurus

I recently uploaded this image which I took during a period of clear skies (but bad seeing) on the island of Hawaii this past March. I was testing out new pointing/tracking software with the keypad and used my 1600 encoder mount with the 175 EDF refractor and my trusty QSI683 camera. I have a few more images of other galaxies which I plan to post.

https://www.astrobin.com/full/2qta6a/0/?nc=Uncarollo&real=&mod=

This spiral was really nice visually in the 175 refractor, and also in Chris Erickson's 130GT refractor which he generously loaned to me. We had a star party several days later to which we invited a number of locals and one professional astronomer (from Keck observatory) who was kept busy by the guests explaining stuff they saw in the eyepieces. That day we also had a wonderful house blessing, Hawaiian style, which included the observatory, where the Kapuna sprinkled the observatory, scope and mount (oops).

Hawaii Island can have incredibly good seeing and exceptionally clear dark skies, but depending on the trade winds can also have very poor seeing at times. When we came at the end of February, we learned that the major observatories on Mauna Kea had just had a horrible winter with most times no clear skies available. It was their worst winter season in memory. Fortunately by early March we a had a clear spell, but of course the Moon came to spoil it for deep sky imaging. Nevertheless, it is really cool to be able to swim and snorkel during the day and see Orion cresting overhead, in short sleeve weather at night.

Rolando


M83 - Southern Pinwheel in Centaurus

Roland Christen
 

I recently uploaded this image which I took during a period of clear skies (but bad seeing) on the island of Hawaii this past March. I was testing out new pointing/tracking software with the keypad and used my 1600 encoder mount with the 175 EDF refractor and my trusty QSI683 camera. I have a few more images of other galaxies which I plan to post.

https://www.astrobin.com/full/2qta6a/0/?nc=Uncarollo&real=&mod=

This spiral was really nice visually in the 175 refractor, and also in Chris Erickson's 130GT refractor which he generously loaned to me. We had a star party several days later to which we invited a number of locals and one professional astronomer (from Keck observatory) who was kept busy by the guests explaining stuff they saw in the eyepieces. That day we also had a wonderful house blessing, Hawaiian style, which included the observatory, where the Kapuna sprinkled the observatory, scope and mount (oops).

Hawaii Island can have incredibly good seeing and exceptionally clear dark skies, but depending on the trade winds can also have very poor seeing at times. When we came at the end of February, we learned that the major observatories on Mauna Kea had just had a horrible winter with most times no clear skies available. It was their worst winter season in memory. Fortunately by early March we a had a clear spell, but of course the Moon came to spoil it for deep sky imaging. Nevertheless, it is really cool to be able to swim and snorkel during the day and see Orion cresting overhead, in short sleeve weather at night.

Rolando


Regreasing an Astro-Physics mount

Roland Christen
 

An AP user posted this video on Cloudy Nights today:

https://www.youtube.com/watch?v=R7s2kTzFNF4

The video is well done and informative.

I have one concern. He mentions using Aeroshell 33 MS grease. Please do not use the MS version because the S stands for sulfur, which corrodes brass and bronze materials. All of our mount use brass and bronze in the geartrain (pinion gears, worm gears etc). Sulfur will eat away at these metals and cause premature wear.

If you will be using Aeroshell grease, use the Aeroshell33 version (non sulfur), which has a green color. It is a very good grease to use by itself. You can also use Dow chemical Molykote33 which has similar properties (no sulfur). Both of these will go down to -100F (-73C) ad will hold up well above 150F. I can also recommend our own grease kit which uses these materials and has some damping components from Nye to make the grease stick better.

Rolando

17361 - 17380 of 88314