Atik Cameras Forum

Images => Video Astronomy => Topic started by: StarMike on April 29, 2016, 02:53:37 pm

Title: Some captures with my Infinity
Post by: StarMike on April 29, 2016, 02:53:37 pm

This were on my C11, with an Optec F3.3 reducer and an Omega UHC filter (does not block IR).  15-20 second exposures stacked for around 5-6 minutes

Bodes Galaxy

Title: Re: Some captures with my Infinity
Post by: StarMike on April 29, 2016, 02:56:08 pm

M66

Title: Re: Some captures with my Infinity
Post by: StarMike on April 29, 2016, 02:56:45 pm

Whirlpool

Title: Re: Some captures with my Infinity
Post by: StarMike on April 29, 2016, 02:57:15 pm

Sunflower

Title: Re: Some captures with my Infinity
Post by: StarMike on April 29, 2016, 02:57:55 pm

HorseHead

Title: Re: Some captures with my Infinity
Post by: donboysail on April 29, 2016, 08:34:18 pm

Nice images Mike.  What adapter are you using with the Optec.  I notice coma but no vignetting.  I have the same Optec and didn't think it would work as well as you're doing.

Don

Title: Re: Some captures with my Infinity
Post by: StarMike on May 02, 2016, 09:35:34 pm

Hi Don, I do get some vignetting, but use the Histogram to eliminate its affect.  It is most evident on the Horsehead pic, where you see stars to  the edges but the actual nebulosity ends prior to that.  I use the adapter recommended by Optec.  It was the 1.87 adapter

Title: Re: Some captures with my Infinity
Post by: StarMike on May 09, 2016, 02:39:28 pm

Took this of the needle galaxy

Title: Re: Some captures with my Infinity
Post by: StarMike on May 09, 2016, 02:40:00 pm

Also got M3

Title: Re: Some captures with my Infinity
Post by: Howie on May 10, 2016, 02:36:01 am

Some more great captures Mike. Still saving for my Infinity. :(

Title: Re: Some captures with my Infinity
Post by: elpajare on May 10, 2016, 08:19:28 am

Thanks for sharing

Could be good if you post your exposing data for each picture. I can't do the same quality with my Infinity. :(

Title: Re: Some captures with my Infinity
Post by: StarMike on May 10, 2016, 01:33:54 pm

Quote from: elpajare on May 10, 2016, 08:19:28 am

Thanks for sharing

Could be good if you post your exposing data for each picture. I can't do the same quality with my Infinity. :(

Most objects are 15-20 seconds exposures stack for 5-6 minutes and very careful adjustments to the histogram.

The M3 globular cluster was different.   It was 1.5 second exposures for about 700 stacks.  I had to do careful movement of the white and gray lines of the Histogram to get such a great image

Title: Re: Some captures with my Infinity
Post by: StarMike on May 10, 2016, 01:34:50 pm

learning how to optimize the histogram takes some time and patience.  Each time out, I get better at it

Title: Re: Some captures with my Infinity
Post by: elpajare on May 10, 2016, 01:58:30 pm

Thanks for your answer.

Is your camera black and white?

Title: Re: Some captures with my Infinity
Post by: StarMike on May 10, 2016, 02:22:11 pm

Yes, I have the monochrome verison.  I chose it because generally, monochrome is more sensitive than color

Title: Re: Some captures with my Infinity
Post by: elpajare on May 10, 2016, 04:50:17 pm

Thanks, my question was for your mention to a "grey scale" in your histogram and I doesn't have it in my camera,

I have the equivalent in a colour camera, maybe will be "colour balance", a orange line.

Title: Re: Some captures with my Infinity
Post by: StarMike on May 10, 2016, 07:32:05 pm

The line is orange on the histogram but controls the gray scale.  I had to move the white line farther to the right to prevent blowout of core, but move the orange line to the left to bring out the image.  The histogram is a powerful tool