Date   

Re: Pyramy

Woody Schlom <woody@...>
 

Measure the voltage yourself to see exactly what yours is putting out. I no longer use Pyramid power supplies, but when I did, mine put out 13.9v DC no-load.



I can’t recall exactly, but I seem to remember Chris recommending knocking the mount’s fastest slew speed down to 600x also. The mount draws a lot less current at that speed.



Woody



From: ap-gto@... <ap-gto@...>
Sent: Tuesday, December 4, 2018 9:38 AM
To: ap-gto@...
Subject: [ap-gto] Pyramy





I am using a Pyramid power supply to power my Mach1. I believe it is the same model Astro-Physics sells.

If the weather is clear Friday I plan to observe. The temp is going to be on or about 10 t0 20 degrees Fahrenheit. Will that output voltage from the Pyramid be ok at those low temps?





[Non-text portions of this message have been removed]


Re: Pyramy

Roland Christen
 

Anything from 13.8 to 18 volts will work fine. Maybe drop the slew rate down to 900x.

Rolando



-----Original Message-----
From: rorschach1@... [ap-gto]
To: ap-gto
Sent: Tue, Dec 4, 2018 12:41 pm
Subject: [ap-gto] Pyramy



I am using a Pyramid power supply to power my Mach1.  I believe it is the same model Astro-Physics  sells.
If the weather is clear Friday I plan to observe.  The temp is going to be on or about 10 t0 20 degrees Fahrenheit. Will that output voltage from the Pyramid be ok  at those low temps?



Pyramy

rorschach1
 

I am using a Pyramid power supply to power my Mach1.  I believe it is the same model Astro-Physics  sells.
If the weather is clear Friday I plan to observe.  The temp is going to be on or about 10 t0 20 degrees Fahrenheit. Will that output voltage from the Pyramid be ok  at those low temps?


Re: Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

I will see if I can clean it up a little.  I thought it was interesting, and it was a bit of a rush job.  I just wanted to share the image.

Terry


Re: Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

I just thought it was my eyes.  It looked weird at first, and it's very close to the core making it hard to spot.  The core of that galaxy is very bright.  Being alert is half the battle :)   It's very cool to think that it happened so long ago and only reaching us now.
  


Re: Bright supernova SN 2018ivc in Messier 77

Roland Christen
 

We would be interested to see your images of M82 for sure. Send us a link.

Rolando



-----Original Message-----
From: benjamin.e.c.koltenbah@... [ap-gto]
To: ap-gto
Sent: Mon, Dec 3, 2018 3:44 pm
Subject: [ap-gto] Re: Bright supernova SN 2018ivc in Messier 77



Terry:

I'll never forget SN 2014J in M82.  Here's the Wikipedia excerpt about the discoverers:

On 21 January 2014 at 19.20 UT, a previously unseen star was observed in M82 at magnitude +11.7 by Dr. Steve J. Fossey, along with a team of 4 of his students, at University College London's training observatory, the University of London Observatory.

It turns out that the night before, really just a few hours before Pacific Time, I had taken some test images of M82 but decided to dedicate my time to M81 because I thought it looked "cooler".  I was a brand new imager and didn't bother to compare my few M82 shots with previous ones on the internet.  I could have been famous with my name in Wikipedia had I been more alert!  Alas, destined for obscurity instead ...

What's funny is that their pictures of M82 and the newly discovered SN were even worse than mine ...

Ben





Re: Bright supernova SN 2018ivc in Messier 77

Ben Koltenbah
 

Terry:

I'll never forget SN 2014J in M82.  Here's the Wikipedia excerpt about the discoverers:

On 21 January 2014 at 19.20 UT, a previously unseen star was observed in M82 at magnitude +11.7 by Dr. Steve J. Fossey, along with a team of 4 of his students, at University College London's training observatory, the University of London Observatory.

It turns out that the night before, really just a few hours before Pacific Time, I had taken some test images of M82 but decided to dedicate my time to M81 because I thought it looked "cooler".  I was a brand new imager and didn't bother to compare my few M82 shots with previous ones on the internet.  I could have been famous with my name in Wikipedia had I been more alert!  Alas, destined for obscurity instead ...

What's funny is that their pictures of M82 and the newly discovered SN were even worse than mine ...

Ben



Re: Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

I just consulted my supernova almanac :)


Re: Bright supernova SN 2018ivc in Messier 77

Ben Koltenbah
 

You sure planned that well, Terry!

Ben



Re: Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

Many thanks sir.  


Re: Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

Thanks mate.  That was luck, it didn't arrange that to happen.  :)


Re: Bright supernova SN 2018ivc in Messier 77

Stuart
 

VERY cool Terry!

Stuart

On Sun, 2 Dec 2018 at 06:24, terry.robison@... [ap-gto] <ap-gto@...> wrote:
 

I think the links where not correct.


Sorry,  Try these.



or


I have been imaging this galaxy over the past month.  I don’t have a complete data set, so the image quality is not the best.  But, there is a gem in there.  On the 24 November 2018, a type II Supernova has just been spotted fairly close the nucleus of M77.  I have two images. The first frame was taken on the 12th of November 2018, and the second on the 28th of November 2018.

 It’s very interesting when you go through your data stack and find these gems.  The image was taken with a 10 RCOS, with a SBIG STL 11000 on an AP-900 mount.   The dark lines in the third frame show the location of the event.

Terry




Re: AC-DC Power supply for AP Mach1 GTO CP4

Roland Christen
 

These kind of converters tend to be fairly noisy electrically and are not well regulated. Might give you some problems during slewing if the voltage dips. I would avoid unregulated power supplies.

Rolando



-----Original Message-----
From: diego_gomezp@... [ap-gto]
To: ap-gto
Sent: Sun, Dec 2, 2018 11:57 am
Subject: [ap-gto] AC-DC Power supply for AP Mach1 GTO CP4

Hello All,

I am looking for a new AC-DC power supply to replace the one I was using to power up my AP Mach 1 and I wondered if the following one could be used:


Probably the only issue I see with this unit is that the output voltage won’t be higher than 12.5VDC and AP recommendation is to use 13.8 VDC specially in cold weather (my case since I live in Canada)

I know most of the people recommend the ones from Powerwerx however cheapest one is $120.

Your commens will be highly appreciated.

Thanks,
Diego



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Posted by: diego_gomezp@...
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AC-DC Power supply for AP Mach1 GTO CP4

Diego Gomez
 

Hello All,

I am looking for a new AC-DC power supply to replace the one I was using to power up my AP Mach 1 and I wondered if the following one could be used:

https://www.amazon.ca/Adapter-Converter-Cigarette-Inverter-Massager/dp/B014TCBZPI/ref=pd_aw_sbs_107_of_1?_encoding=UTF8&pd_rd_i=B014TCBZPI&pd_rd_r=23d7fe17-f659-11e8-b1af-c353f8636503&pd_rd_w=sF9Sy&pd_rd_wg=XFSzX&pf_rd_i=mobile-dp-sims&pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_p=3fa2d334-7ab1-47df-a46b-3a607fd250e3&pf_rd_r=8PHYZSWC04AAD04RGVCB&pf_rd_s=mobile-dp-sims&pf_rd_t=40701&psc=1&refRID=HY91D7SZ499NT0QRA98F

Probably the only issue I see with this unit is that the output voltage won’t be higher than 12.5VDC and AP recommendation is to use 13.8 VDC specially in cold weather (my case since I live in Canada)

I know most of the people recommend the ones from Powerwerx however cheapest one is $120.

Your commens will be highly appreciated.

Thanks,
Diego


Re: Bright supernova SN 2018ivc in Messier 77

Roland Christen
 

That's really cool!

Rolando



-----Original Message-----
From: terry.robison@... [ap-gto]
To: ap-gto
Sent: Sun, Dec 2, 2018 5:24 am
Subject: [ap-gto] Bright supernova SN 2018ivc in Messier 77



I think the links where not correct.

Sorry,  Try these.


or


I have been imaging this galaxy over the past month.  I don’t have a complete data set, so the image quality is not the best.  But, there is a gem in there.  On the 24 November 2018, a type II Supernova has just been spotted fairly close the nucleus of M77.  I have two images. The first frame was taken on the 12th of November 2018, and the second on the 28th of November 2018.

 It’s very interesting when you go through your data stack and find these gems.  The image was taken with a 10 RCOS, with a SBIG STL 11000 on an AP-900 mount.   The dark lines in the third frame show the location of the event.

Terry



Bright supernova SN 2018ivc in Messier 77

Terry Robison
 

I think the links where not correct.


Sorry,  Try these.



or


I have been imaging this galaxy over the past month.  I don’t have a complete data set, so the image quality is not the best.  But, there is a gem in there.  On the 24 November 2018, a type II Supernova has just been spotted fairly close the nucleus of M77.  I have two images. The first frame was taken on the 12th of November 2018, and the second on the 28th of November 2018.

 It’s very interesting when you go through your data stack and find these gems.  The image was taken with a 10 RCOS, with a SBIG STL 11000 on an AP-900 mount.   The dark lines in the third frame show the location of the event.

Terry


Re: Trifid Nebula. - Ha Lum RGB

Terry Robison
 

Thanks Geoff.  We can get lucky every now and then. 


Re: Trifid Nebula. - Ha Lum RGB

Geoff Smith
 

Super sharp resolution there Terry and good, deep colour
Geoff


Re: Trifid Nebula. - Ha Lum RGB

Terry Robison
 

Thank you Keith :)


Re: Trifid Nebula. - Ha Lum RGB

Terry Robison
 

Thanks Stuart