Date   

Mach2 Keypad Availability

Haydon Burns
 

Hi, thought I’d check in on the availability for people who have one on order.  Are the keypads in between production runs and/or are they still backlogged.  Just trying to manage my expectations on when I might receive one that is on order.  Thanks


Re: Refractor on top of OTA ok? AP 1100 GTO Mount

Mike Dodd
 

On 12/2/2020 3:28 PM, David Enck wrote:

Thank you for you advice and thoughts!
I recommend against having ANY weight on top of OTA rings, ESPECIALLY a 14" OCT.

A tandem bar is a MUCH better choice, even though it means balancing the setup on three axes. I have a Triad bar (used as a tandem bar), and I ask my wife to help me when balance is (rarely) needed. I also wipe a thin coat of oil on the dovetail plates to make balancing easier.

--- Mike


Re: Another Recommendation of the Ridgid Tool Cart for transporting the AP900/1100

rtlangland
 

HI John,

I have a similar setup but need the replicate the system you have for the weights. What size were the TTS bags that you used. Small or medium? I would like to order two for the same purpose for my 1100 mount.

Thanks

Bob Langland

On Dec 2, 2020, at 7:43 AM, john vogt <atmer@...> wrote:


Dec 1   

After watching Tony's (Harley Davidson) videos of how he transports his mounts (Thanks Tony!)
I purchased from Home Depot the Ridgid Mobile Gear Cart($60), 2-22" Tool Boxes($40each) and 22" Gear Organizer($20).
At the time the Gear Organizer was free with the purchase of a Cart and Tool Box.

As I had quite a bit of Polyethylene Foam sheeting I custom cut a number of pieces to hold and cushion the various
parts of the mount. I also lined the bottom and sides of the cart and one tool box with cut pieces of a floor cushion
from Harbor Freight. The RA assembly fits nicely into the cart and the Tool Box holds the Dec housing, Dec Top Plate
and saddle, CWT shaft and extension. I used some CPVC pipe to hold the shafts for further protection.

The second Tool Box holds the CWT and accessory (RAPAS,CP3,Keypad) cases.

As Tony mentions in his review the Ridgid system is well built, light, sturdy and best of all inexpensive. Highly Recommended.

Below are a few pix. 

John



Re: Refractor on top of OTA ok? AP 1100 GTO Mount

Christopher Erickson
 

I would put a tandem bar on top of the mount and the two scopes side by side. I have done that with a C14 and a 130EDF-GT with good results.

ADM has tandem bars.

Don't be tempted to put a guider on the refractor. Way too much flexure in the reflector for that to ever work. Use an off-axis or on-axis guider on the reflector instead.

There will be some inevitable pointing error between the scopes. You can either:

1. Don't worry about it. There will be inevitable differential flexure as you move around the sky. 

2. Use adjustable rings on the refractor.

3. Use an ADM X-Y adjustable platform under the refractor.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   


On Wed, Dec 2, 2020, 10:52 AM George <george@...> wrote:

David,

 

I do not recommend it due to the enormous moment arm.   Sticking the 20 lb. refractor on top, way out from the center of gravity is like adding 40-50 lb.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of David Enck
Sent: Wednesday, December 2, 2020 2:28 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Refractor on top of OTA ok? AP 1100 GTO Mount

 

Hello AP Folks,

I  currently run a Meade LX850 14 inch SCT  ota on my 1100 GTO. It handles it beautifully for visual and photography.. I am  looking to possibly add a Takahashi TSA 120  APO to the mix. My 14 inch weights about 75 pounds with all the gear on it. The new TAK 120 is 15 pounds bare, so about 20 with rings and a dovetail bar..  If I  choose to mount it on top of the OTA will it be ok? I  have about 118 lbs of counterweights available to me to use to counter balance it.

I am looking  to  go this route vs side by side  mounting as it will be more difficult to  balance the dec axis by myself with this much weight involved trying to slide the saddle plates back and forth. There is a  huge weight difference between the two scopes..

Thank you for you  advice and thoughts!  

David


Re: Refractor on top of OTA ok? AP 1100 GTO Mount

David Enck
 

Ok, thanks George, that helps narrow my options!

David

On Dec 2, 2020, at 12:52 PM, George <george@...> wrote:



David,

 

I do not recommend it due to the enormous moment arm.   Sticking the 20 lb. refractor on top, way out from the center of gravity is like adding 40-50 lb.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of David Enck
Sent: Wednesday, December 2, 2020 2:28 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Refractor on top of OTA ok? AP 1100 GTO Mount

 

Hello AP Folks,

I  currently run a Meade LX850 14 inch SCT  ota on my 1100 GTO. It handles it beautifully for visual and photography.. I am  looking to possibly add a Takahashi TSA 120  APO to the mix. My 14 inch weights about 75 pounds with all the gear on it. The new TAK 120 is 15 pounds bare, so about 20 with rings and a dovetail bar..  If I  choose to mount it on top of the OTA will it be ok? I  have about 118 lbs of counterweights available to me to use to counter balance it.

I am looking  to  go this route vs side by side  mounting as it will be more difficult to  balance the dec axis by myself with this much weight involved trying to slide the saddle plates back and forth. There is a  huge weight difference between the two scopes..

Thank you for you  advice and thoughts!  

David


Re: Refractor on top of OTA ok? AP 1100 GTO Mount

George
 

David,

 

I do not recommend it due to the enormous moment arm.   Sticking the 20 lb. refractor on top, way out from the center of gravity is like adding 40-50 lb.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of David Enck
Sent: Wednesday, December 2, 2020 2:28 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Refractor on top of OTA ok? AP 1100 GTO Mount

 

Hello AP Folks,

I  currently run a Meade LX850 14 inch SCT  ota on my 1100 GTO. It handles it beautifully for visual and photography.. I am  looking to possibly add a Takahashi TSA 120  APO to the mix. My 14 inch weights about 75 pounds with all the gear on it. The new TAK 120 is 15 pounds bare, so about 20 with rings and a dovetail bar..  If I  choose to mount it on top of the OTA will it be ok? I  have about 118 lbs of counterweights available to me to use to counter balance it.

I am looking  to  go this route vs side by side  mounting as it will be more difficult to  balance the dec axis by myself with this much weight involved trying to slide the saddle plates back and forth. There is a  huge weight difference between the two scopes..

Thank you for you  advice and thoughts!  

David


Refractor on top of OTA ok? AP 1100 GTO Mount

David Enck
 

Hello AP Folks,

I  currently run a Meade LX850 14 inch SCT  ota on my 1100 GTO. It handles it beautifully for visual and photography.. I am  looking to possibly add a Takahashi TSA 120  APO to the mix. My 14 inch weights about 75 pounds with all the gear on it. The new TAK 120 is 15 pounds bare, so about 20 with rings and a dovetail bar..  If I  choose to mount it on top of the OTA will it be ok? I  have about 118 lbs of counterweights available to me to use to counter balance it.

I am looking  to  go this route vs side by side  mounting as it will be more difficult to  balance the dec axis by myself with this much weight involved trying to slide the saddle plates back and forth. There is a  huge weight difference between the two scopes..

Thank you for you  advice and thoughts!  

David


Re: Additional Options for storing the RAPAS,CP and Counterweights

thefamily90 Phillips
 

You guys are too organized for me! Lol!!

Jim


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of john vogt <atmer@...>
Sent: Wednesday, December 2, 2020 9:47:15 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Additional Options for storing the RAPAS,CP and Counterweights
 
Following Tony's (Harley Davidson) lead showing what he uses to store his mount accessories, here is what
I came up with.

For the RAPAS and CP3/4/5 and cables I use a Caseling hard case purchased from Amazon:
Amazon.com: Caseling Universal Electronics/Accessories Hard Travel Organizer Carrying Case Bag, 9.8” x 5.6”x 2.8” - Black: Computers & Accessories

For my Keypad, also from Amazon:
Amazon.com: BUBM 3pcs/set Padded Travel Office Cord Cable Gear Organizer Electronics Accessories Bag Gadget Carry Pouch Electrical Cord Management: Office Products
I had a bit of a problem finding a case just large enough to fit the keypad without severely bending the strain relief until I came across this one. It comes with a total of 3 cases, the largest being the one I used. The two smaller ones are good for other odds and ends.

Lastly for the counterweights I use two Neoprene cases sold Track the Stars for their Panther mount. The cases fit the AP weights perfectly. I cut up circular pieces of Polyethylene foam to use as dividers and prevent the weights from banging into each other. Each one hold two weights, 18lb and/or 10lb,5lb.




Additional Options for storing the RAPAS,CP and Counterweights

john vogt
 

Following Tony's (Harley Davidson) lead showing what he uses to store his mount accessories, here is what
I came up with.

For the RAPAS and CP3/4/5 and cables I use a Caseling hard case purchased from Amazon:
Amazon.com: Caseling Universal Electronics/Accessories Hard Travel Organizer Carrying Case Bag, 9.8” x 5.6”x 2.8” - Black: Computers & Accessories

For my Keypad, also from Amazon:
Amazon.com: BUBM 3pcs/set Padded Travel Office Cord Cable Gear Organizer Electronics Accessories Bag Gadget Carry Pouch Electrical Cord Management: Office Products
I had a bit of a problem finding a case just large enough to fit the keypad without severely bending the strain relief until I came across this one. It comes with a total of 3 cases, the largest being the one I used. The two smaller ones are good for other odds and ends.

Lastly for the counterweights I use two Neoprene cases sold Track the Stars for their Panther mount. The cases fit the AP weights perfectly. I cut up circular pieces of Polyethylene foam to use as dividers and prevent the weights from banging into each other. Each one hold two weights, 18lb and/or 10lb,5lb.




Another Recommendation of the Ridgid Tool Cart for transporting the AP900/1100

john vogt
 


Dec 1   

After watching Tony's (Harley Davidson) videos of how he transports his mounts (Thanks Tony!)
I purchased from Home Depot the Ridgid Mobile Gear Cart($60), 2-22" Tool Boxes($40each) and 22" Gear Organizer($20).
At the time the Gear Organizer was free with the purchase of a Cart and Tool Box.

As I had quite a bit of Polyethylene Foam sheeting I custom cut a number of pieces to hold and cushion the various
parts of the mount. I also lined the bottom and sides of the cart and one tool box with cut pieces of a floor cushion
from Harbor Freight. The RA assembly fits nicely into the cart and the Tool Box holds the Dec housing, Dec Top Plate
and saddle, CWT shaft and extension. I used some CPVC pipe to hold the shafts for further protection.

The second Tool Box holds the CWT and accessory (RAPAS,CP3,Keypad) cases.

As Tony mentions in his review the Ridgid system is well built, light, sturdy and best of all inexpensive. Highly Recommended.

Below are a few pix. 

John


Re: NGC 1097, Arp 77

REDIGER-LIZLOV Didier
 

hello Geoff, 
it was not a critique just the expression of my personnal taste 😉. Many images are now saturated like that  (escpecially from USA) but personnaly I  prefer stay  on softer coloration. 😉

Didier REDIGER-LIZLOV


De : main@ap-gto.groups.io <main@ap-gto.groups.io> de la part de Geoff Smith <ghsmith45@...>
Envoyé : mardi 1 décembre 2020 22:29
À : main@ap-gto.groups.io <main@ap-gto.groups.io>
Objet : Re: [ap-gto] NGC 1097, Arp 77
 
Thanks for all the positive comments. Didier, about the colour and FOV. I certainly thought about pulling the colour back a little, but I decided that there was more immediate impact leaving it as it is. It was cropped from 49' x 49' down to 45' x 34'


Re: APPM Models

Worsel
 

Lee

A tip on using MGBox V2 with APPC.

Do not use the astro-mi.ch Windows app.  Just download the ASCOM Local Server.  Use the same COM port in that app and in APPC and APPC will get the data when you connect  in GPS Tab via ASCOM Observing Conditions.

Bryan


Re: Change Mount COM Port

dang.astro
 

Thank you Mike! I will give this a try and report back

Best,
Dan


Re: Storage box for the Mach2 mount

Jim Hawn
 

Thanks.  I think I will go with Kaizen foam as well now that I have found a local supplier (couldn't find Kaizen foam at Home Depot).  Rockler also has retail outlets throughout the US.
https://www.rockler.com/fastcap-kaizen-tool-storage-foam


Re: Storage box for the Mach2 mount

David Albers <humealbers@...>
 

One type of foam I like to use is Kaizen foam.  It cuts easily and is layered so you can cut to a certain depth and then peel back just that layer.  It's available from multiple places, even Home Depot sells it I think...and yes it's expensive as well.



From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of M Hambrick <mhambrick563@...>
Sent: Tuesday, December 1, 2020 1:43 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Storage box for the Mach2 mount
 
Hi Jim

I found my foam on eBay. There are quite a few sellers that offer the Density 1.7 Polyethylene Foam Sheets in different colors and densities (higher density = "harder"). I bought my foam from Hexapackaging. They offer 2 ft X 2 ft and 2 ft X 4 ft sheets in a variety of thicknesses ranging from 1/2" to 2".

This foam is not cheap ! A couple years ago I had to send my 180 EDT back to Astro-Physics for some upgrades. Since I did not have the original shipping carton, I had to make one using these 2-inch thick foam sheets. At the same time, I also had to replace the foam in the wood storage case that came with the scope. This project cost several hundred dollars. The moral of this story is to save those shipping cartons with all of that high density foam. 


Re: NGC 1097, Arp 77

Geoff Smith
 

Thanks for all the positive comments. Didier, about the colour and FOV. I certainly thought about pulling the colour back a little, but I decided that there was more immediate impact leaving it as it is. It was cropped from 49' x 49' down to 45' x 34'


Re: NGC 1097, Arp 77

Don Anderson
 

Great work Geoff!
I see the jets quite clearly. Amazing detail right down to the galaxy core. 

Don Anderson


On Monday, November 30, 2020, 08:56:17 p.m. MST, Geoff Smith <ghsmith45@...> wrote:


I had some trouble processing this one. There are faint jets emanating from the galaxy and getting these to show up without blowing out the galaxy was tricky.
Taken over the last new moon period.
Image here https://www.astrobin.com/wwb657/B/?nc=user

Taken with Plane Wave 12.5" on an AP 900 mount.
Processed in PixInsight.

Description:
NGC 1097 is a Seyfert galaxy, harbouring a supermassive black hole in its centre. There are four mysterious jets in an X shape centred on the nucleus. Two of these pointing to the upper right corner of the image are easily seen here. The upper one has a right angle bend and is often referred to as the "Dogleg". There is a faint suggestion of a third jet to the left of the image opposite the fainter one on the right. This is readily seen in the inverted view.


Re: Storage box for the Mach2 mount

M Hambrick
 

Hi Jim

I found my foam on eBay. There are quite a few sellers that offer the Density 1.7 Polyethylene Foam Sheets in different colors and densities (higher density = "harder"). I bought my foam from Hexapackaging. They offer 2 ft X 2 ft and 2 ft X 4 ft sheets in a variety of thicknesses ranging from 1/2" to 2".

This foam is not cheap ! A couple years ago I had to send my 180 EDT back to Astro-Physics for some upgrades. Since I did not have the original shipping carton, I had to make one using these 2-inch thick foam sheets. At the same time, I also had to replace the foam in the wood storage case that came with the scope. This project cost several hundred dollars. The moral of this story is to save those shipping cartons with all of that high density foam. 


Re: APPM Models

 

Hi Lee

afaik pressure doesn't really make much of a difference for model accuracy. Temperature is the real variable there


Brian

On Tue, Dec 1, 2020 at 10:03 AM Lee Dodge <ldodge12@...> wrote:
Worsel,

Thanks for the reply.  I think what was particularly bothering me was the large temperature dependence in the correction equation that I was using to get from barometric pressure to absolute pressure.  I finally gave up and ordered an MGBox V2 to measure the pressure directly.  I hope that this will improve the accuracy of my APPM models.  Previously I was using a THUM device for temperature and humidity, and a fixed value of 737 mbar for pressure, that should correspond to a high pressure, clear day at my altitude.  

When I tried to put together an APPM model, it got about half way through and then froze up for some unknown reason.  I will try again with the MGBox V2 that hopefully will make it more accurate and worth the effort.  Since I am working in a dome, it takes some extra effort to keep swinging the dome around to get a view of the sky.  I did use the search pattern laid out for a dome that helped a bit.    



--
Brian 



Brian Valente


Re: APPM Models

Lee Dodge
 

Worsel,

Thanks for the reply.  I think what was particularly bothering me was the large temperature dependence in the correction equation that I was using to get from barometric pressure to absolute pressure.  I finally gave up and ordered an MGBox V2 to measure the pressure directly.  I hope that this will improve the accuracy of my APPM models.  Previously I was using a THUM device for temperature and humidity, and a fixed value of 737 mbar for pressure, that should correspond to a high pressure, clear day at my altitude.  

When I tried to put together an APPM model, it got about half way through and then froze up for some unknown reason.  I will try again with the MGBox V2 that hopefully will make it more accurate and worth the effort.  Since I am working in a dome, it takes some extra effort to keep swinging the dome around to get a view of the sky.  I did use the search pattern laid out for a dome that helped a bit.    

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