Search found 1763 matches

by turfpit
Thu Sep 13, 2018 1:40 pm
Forum: Tutorials
Topic: HOWTO Debayer Captured Images
Replies: 29
Views: 46088

Re: HOWTO Debayer Captured Images

Thanks for posting this Kirk. The files were captured in SharpCap v3.1.5219.0 Kirk - do you have the Sharpcap capture settings file to post? Did the files you put into PIPP come straight from Sharpcap or via some other software? Robin - any thoughts on the "TIFF file has unsupported compression...
by turfpit
Thu Sep 13, 2018 9:02 am
Forum: Gallery
Topic: IC 5070 Pelican Nebula
Replies: 6
Views: 3156

Re: IC 5070 Pelican Nebula

Minos At home, the Celestron AVX mount is sat on a fixed pier (bolted to a 2' x 2' x3' deep block of concrete). When at my dark site, I use the AVX tripod. [Note: for clarification to others reading this post, All Star Polar Align (ASPA) is a facility built into the Celestron mount firmware to enabl...
by turfpit
Wed Sep 12, 2018 1:24 pm
Forum: Deep Sky Imaging
Topic: To Gain or not to overGain
Replies: 37
Views: 16063

Re: To Gain or not to overGain

This thread gets more interesting by the hour. When I took up Astro-imaging as a hobby a couple of years ago, I aspired (and still do) to create the images like those at http://www.orionoptics.co.uk/imagegallery.html . I will leave it for anyone interested to look up the specs of the cameras used. ;...
by turfpit
Wed Sep 12, 2018 12:27 am
Forum: Gallery
Topic: IC 5070 Pelican Nebula
Replies: 6
Views: 3156

Re: IC 5070 Pelican Nebula

Cheers Brian. A tricky one to dig out of the stack - some changes needed to capture settings.
Test frame below - the methodology seems to be holding up..

IC5070-FITS-image-statistics.jpg
IC5070-FITS-image-statistics.jpg (99.61 KiB) Viewed 3148 times
by turfpit
Tue Sep 11, 2018 11:58 pm
Forum: Deep Sky Imaging
Topic: To Gain or not to overGain
Replies: 37
Views: 16063

Re: To Gain or not to overGain

Mitch In discussions with Nick @ Altair, he has been suggesting gain values of 2% - 4% which translates to gain=100 to gain=200 in SharpCap. These figures seemed to work well for my M31 and M52+NGC7635 in the Gallery. The black level=100 was to ensure no black clipping (decided by looking at the Min...
by turfpit
Tue Sep 11, 2018 11:47 pm
Forum: Deep Sky Imaging
Topic: To Gain or not to overGain
Replies: 37
Views: 16063

Re: To Gain or not to overGain

Mitch Back to your original post. How about this: choose some object capture using smart histogram suggested settings capture using a variety of exposure, gain, offset values (user defined) process captures ideally following the same process report back with images and findings I have not seen any s...
by turfpit
Tue Sep 11, 2018 11:27 pm
Forum: Deep Sky Imaging
Topic: To Gain or not to overGain
Replies: 37
Views: 16063

Re: To Gain or not to overGain

Mark ImageJ - I got these instructions from Brian when I had the same problem (that will teach me to tinker with defaults). Open an image file From the menu, click PROCESS -> MATH -> MULTIPLY In the dialog box, enter the value 16 (optionally check Preview) From the menu, click FILE -> SAVE AS (choos...
by turfpit
Tue Sep 11, 2018 11:19 pm
Forum: Deep Sky Imaging
Topic: To Gain or not to overGain
Replies: 37
Views: 16063

Re: To Gain or not to overGain

"Save 10/12/14 bit images in FITS files without stretching to 16 bit (Altair, QHY, ZWO cameras only)" The default for this box is unchecked. Robin - perhaps a note on the screen or a tip to say something along the lines of "only enable for use with photometry" otherwise we will ...
by turfpit
Tue Sep 11, 2018 10:25 pm
Forum: Gallery
Topic: IC 5070 Pelican Nebula
Replies: 6
Views: 3156

IC 5070 Pelican Nebula

_IC5070-60x60s-g300-bl100.jpg Altair Lightwave 66ED, Celestron AVX mount, Altair 183C All Star Polar Align (Celestron mount), focus Bahtinov mask, unguided. SharpCap 3.1 60 x 60s, gain=300, black level=100 60 lights, 30 darks, 50 flats Processed in Siril + GIMP 2.10 (40 minutes total) This target i...
by turfpit
Tue Sep 11, 2018 6:21 am
Forum: Deep Sky Imaging
Topic: Cannot save individual frames as .fits
Replies: 7
Views: 3687

Re: Cannot save individual frames as .fits

Steve

Have a look in File > SharpCap Settings, General tab to change the default format for Video and Still.

Dave