Search found 307 matches

by turfpit
Tue Sep 18, 2018 7:21 am
Forum: Gallery
Topic: M31 in 35 minutes with Altair 183M
Replies: 6
Views: 42

Re: M31 in 35 minutes with Altair 183M

Robin Yes, that feature alone is worth the price of the software! When setting up for the start of the capture, I turn the gain up to around 50%. That way, combined with the stretch, I can drop the exposure to much less than the the target (60s in this case). This allows minor positional adjustments...
by turfpit
Tue Sep 18, 2018 1:41 am
Forum: Gallery
Topic: M31 in 35 minutes with Altair 183M
Replies: 6
Views: 42

Re: M31 in 35 minutes with Altair 183M

Robin
One of the M31 frames loaded into SharpCap using the Test Camera 1 (Deep Sky). Display Histogram stretch applied to show object of interest, M31, at the centre. Without the stretch, the capture display looks like the image above.

Dave
display-histogram-stretch-demo.JPG
display-histogram-stretch-demo.JPG (138.08 KiB) Viewed 17 times
by turfpit
Mon Sep 17, 2018 9:06 pm
Forum: General Discussions
Topic: Update Fails
Replies: 2
Views: 15

Re: Update Fails

Watch out for a blinking icon on the task bar which is a window asking for permission to proceed with the install. Still catches me out sometimes.

Dave
by turfpit
Mon Sep 17, 2018 8:47 pm
Forum: Gallery
Topic: M31 in 35 minutes with Altair 183M
Replies: 6
Views: 42

Re: M31 in 35 minutes with Altair 183M

Robin Yes that is an in-progress capture of a single 60s frame - progress at botton right is 20/40. I can load up one of the frames later, stretch it and post back. It does clearly show M31 when stretched, that is how I ensure I am 'on target'. Mini histogram stretch is very useful. I can also post ...
by turfpit
Mon Sep 17, 2018 2:57 pm
Forum: Gallery
Topic: M31 in 35 minutes with Altair 183M
Replies: 6
Views: 42

Re: M31 in 35 minutes with Altair 183M

SharpCap Capture screen for above image..
capture-screen.png
capture-screen.png (90.34 KiB) Viewed 38 times
by turfpit
Mon Sep 17, 2018 2:52 pm
Forum: Gallery
Topic: M31 in 35 minutes with Altair 183M
Replies: 6
Views: 42

M31 in 35 minutes with Altair 183M

_M31-35x60s-g100-bl20.jpg Altair Lightwave 66ED, Planostar 0.8x flattener/reducer, Celestron AVX mount, Altair 183M camera. SharpCap + FITS Liberator + Nebulosity + GIMP 2.10 Focus with Bahtinov mask, unguided. 35x60s, gain=100, black level=20 35 lights, 30 darks, 30 flat, 30 bias Session terminate...
by turfpit
Sun Sep 16, 2018 5:52 pm
Forum: Gallery
Topic: The Heart Nebula Double Stacking Project
Replies: 9
Views: 56

Re: The Heart Nebula Double Stacking Project

Minos

Nice shape on the histogram and good figures for the min, max image statistics in FITS Liberator.

I think the front lawn needs a trim though :lol:

Dave
by turfpit
Sun Sep 16, 2018 1:53 pm
Forum: Tips and Tricks
Topic: New public domain software: astro-dark-frame-library-manager
Replies: 10
Views: 187

Re: New public domain software: astro-dark-frame-library-manager

Very interesting Brian - a 7deg C drop.

A demonstration of what happens when 9am darks are applied to 9pm lights and vice versa would be very educational. An extreme test but should be a good demonstration about why to avoid temperature mismatches.

Dave
by turfpit
Fri Sep 14, 2018 8:53 pm
Forum: Deep Sky Imaging
Topic: Sync failure after plate solve
Replies: 4
Views: 77

Re: Sync failure after plate solve

Robin

Bottom left button not mentioned in 2.09 doc. Have captured that for my notes.

Dave
by turfpit
Fri Sep 14, 2018 6:38 pm
Forum: Tips and Tricks
Topic: New public domain software: astro-dark-frame-library-manager
Replies: 10
Views: 187

Re: New public domain software: astro-dark-frame-library-manager

Nice piece of work Brian and my compliments on the documentation.

Dave