#1  
Old 24-08-2016, 08:48 PM
SimmoW's Avatar
SimmoW (SIMON)
Farting Nebulae

SimmoW is offline
 
Join Date: Jan 2014
Location: Tamleugh, Victoria, Australia
Posts: 1,334
Simmo's first test of the ASI1600MM COOL

Hi folks, just a quick ASI1600 camera update from me. Last night in Melbourne we had the first 'mainly clear' night for many weeks. Coincidentally that night I received the very last adapter to mount the image train to the 'scope.

Thankfully I found sharp focus very easily. Rather relieved, as with all the attachments like filter wheel and OAG, the backfocus was a challenge to keep within limits. All good, yay!

This is a stack of 13 shots of 20 seconds (!!) each, taken on my Tak E-130D f3.3 'scope. Just luminance. Gain at 100. Temp -15c.

Guiding was crap as I'm yet to work out how to accurately focus the new Lodestar guide cam, and mount alignment was shocking due to a few issues I worked out later. So don't pixel peep too much!

Now that focus is confirmed, I'll fill up the new filter wheel with its goodies and pray for good weather.

In my moderately dark location, pixinsight tells me that the optimum luminance exposure is...wait for it...90 seconds! Will be interested to see what the NB filters produce.
Attached Thumbnails
Click for full-size image (image.jpg)
202.5 KB123 views
Reply With Quote
  #2  
Old 24-08-2016, 08:53 PM
glend (Glen)
Registered User

glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 5,331
Nice Simon, has that typically smooth ASI1600 look. You may find 90 seconds too long for LRGB.
Reply With Quote
  #3  
Old 24-08-2016, 09:36 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,288
That's turned out really well Simon, good to hear that it's all working well together
Although it was clear last night the seeing wasn't crash hot, I could see twinkling all across the sky.
Reply With Quote
  #4  
Old 25-08-2016, 03:58 AM
SimmoW's Avatar
SimmoW (SIMON)
Farting Nebulae

SimmoW is offline
 
Join Date: Jan 2014
Location: Tamleugh, Victoria, Australia
Posts: 1,334
Yes you are right Colin, seeing was bad, when I was focusing in TSX I struggled to get FWHM down to 3.5, with huge fluctuations. But I could at least focus!
Reply With Quote
  #5  
Old 25-08-2016, 06:05 AM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,288
Quote:
Originally Posted by SimmoW View Post
Yes you are right Colin, seeing was bad, when I was focusing in TSX I struggled to get FWHM down to 3.5, with huge fluctuations. But I could at least focus!
For a test that's all that matters!
Reply With Quote
  #6  
Old 25-08-2016, 08:49 AM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,582
Good to see you get off your butt and capture a few photons, Simmo
Reply With Quote
  #7  
Old 25-08-2016, 09:56 AM
Camelopardalis's Avatar
Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 4,652
Quote:
Originally Posted by glend View Post
Nice Simon, has that typically smooth ASI1600 look. You may find 90 seconds too long for LRGB.
+1...my first test shots from a dark site were 90 seconds at unity gain and in my assessment are overexposed

Still, pretty impressive for a short stack of 20s shots
Reply With Quote
  #8  
Old 25-08-2016, 11:09 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 15,442
Well that is very impressive for 260 seconds of exposure. That camera must be very sensitive.

Greg.
Reply With Quote
  #9  
Old 25-08-2016, 11:36 AM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,582
Quote:
Originally Posted by gregbradley View Post
Well that is very impressive for 260 seconds of exposure. That camera must be very sensitive.
A f/3.3 scope helps too!
Reply With Quote
  #10  
Old 25-08-2016, 12:01 PM
SimmoW's Avatar
SimmoW (SIMON)
Farting Nebulae

SimmoW is offline
 
Join Date: Jan 2014
Location: Tamleugh, Victoria, Australia
Posts: 1,334
Quote:
Originally Posted by RickS View Post
Good to see you get off your butt and capture a few photons, Simmo
Oi Rick, not my fault, blame the weather. Oh and late suppliers. And me stuffing around

Quote:
Originally Posted by Camelopardalis View Post
+1...my first test shots from a dark site were 90 seconds at unity gain and in my assessment are overexposed

Still, pretty impressive for a short stack of 20s shots
Very nice to hear Dunk! busting to test the 3nm NB results

Quote:
Originally Posted by RickS View Post
A f/3.3 scope helps too!
Ooh yes Rick, exactly why I decided to try the new cam, it seemed a perfect combo with the scope. It might be too high Rez for the new F4 10 incher that Alistair Sam is helping me build, but then the Sony A7s will be perfectly matched. Then again, with the 1000mm the new cam will produce lovely detailed images!
Reply With Quote
  #11  
Old 25-08-2016, 03:49 PM
Camelopardalis's Avatar
Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 4,652
Yeah f/3.3 is crazy fast, that's a good f-stop and a half faster than my scope
Reply With Quote
  #12  
Old 25-08-2016, 06:26 PM
Slawomir's Avatar
Slawomir (Suavi)
Amateur Photon Collector

Slawomir is offline
 
Join Date: Sep 2014
Location: Proserpine
Posts: 3,001
Very pleasing result Simon, now I am looking forward to your next photo!
Reply With Quote
  #13  
Old 25-08-2016, 07:22 PM
SimmoW's Avatar
SimmoW (SIMON)
Farting Nebulae

SimmoW is offline
 
Join Date: Jan 2014
Location: Tamleugh, Victoria, Australia
Posts: 1,334
Quote:
Originally Posted by Slawomir View Post
Very pleasing result Simon, now I am looking forward to your next photo!
Funny you should say that Suavi, I always say the same when I see yours
Reply With Quote
  #14  
Old 26-08-2016, 11:29 AM
Slawomir's Avatar
Slawomir (Suavi)
Amateur Photon Collector

Slawomir is offline
 
Join Date: Sep 2014
Location: Proserpine
Posts: 3,001
Quote:
Originally Posted by SimmoW View Post
Funny you should say that Suavi, I always say the same when I see yours
I know it has been quite a while since I presented anything on IIS, but mount has been recently returned from servicing and I started working on a new project...finally!
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 02:42 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
Celestron Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Bintel
Advertisement
Lunatico Astronomical
Advertisement
Meade Australia
Advertisement
NexDome Observatories
Advertisement
SkyWatcher Australia
Advertisement
Astronomy and Electronics Centre
Advertisement