Astrophotographers hangout. Invite friends and notice chat bar on bottom.

Give me Some Constructive Criticism


Give me Some Constructive Criticism

This is a group that is designed for us to critically analyze each others images and to give suggestions so we can strive for that FINAL REPROCESS.
Only 2 rules: 1). Don't be mean and 2). don't be sensitive to criticism.

Members: 18
Latest Activity: Dec 14, 2011

"Constructive criticism: criticism or advice that is useful and intended to help or improve something, often with an offer of possible solutions"
So who is going to be the next "Top Astrophotographer"? I'm hoping that this group will help us all in processing our images. Submit files as you would in the Reprocess My Image group but also please add all pertinent information (ie. optics used, stacking technique, stock camera or modified camera and post processing platform).When commenting on someones image please describe how you find the image (perfect, natural looking, too contrasty or "colors are off" etc.) and describe how YOU would like to see the image.When posting an image please try not to be defensive, you are posting your image to make it better. Above all, lets have fun in this group while learning how to improve the images we work hard on and stay up all night to get. -Steve

Discussion Forum

M20: Hi, my name is Trevor, and I am a processing-a-holic.

Started by Trevor Woodrow. Last reply by Trevor Woodrow Jul 9, 2011. 20 Replies

Hi All,See the attached. Took this the weekend before last.36 x 5minSt2000xcmExplore Scientific 102 ED TripletAstronomick CCD LPRI cannot put this down. The lower right is version 7, and the other…Continue

I can't quit M101

Started by Steve Coates. Last reply by Marc Basti Jun 7, 2011. 4 Replies

I have 4+ hours on this and I can't help but cont to reprocess this.Here are the details:3 min exposures stacked in DSS for a total of 4 hours 18 minPS CS5Orion 80mm EONOrion 80mm guide scope with…Continue

Comment Wall


You need to be a member of Give me Some Constructive Criticism to add comments!

Comment by Marc Basti on July 8, 2011 at 6:01pm
Derek, I'd go w/3rd time is the charm, but seems pretty close to #1. Not crazy about #2 too washy, not enough contrast (for my tastes). Marc PS Don't shoot me I'm only the piano player, lol.
Comment by Derek Baker on July 8, 2011 at 3:37pm
Thanks Barry! I am just about to upload a third one. I'd be interested in how it compares to the first two.....
Comment by Barry Brence on July 8, 2011 at 3:04pm
It's a close call, but I guess I would pick the first looks natural. The second one looks slightly over-processed. It comes down to personal preference I think.
Comment by Derek Baker on July 8, 2011 at 2:57pm
Ok....On my page I have uploaded two versions of a two-frame mini-mosaic of NGC7000. Which do you prefer?

FYI, the data was acquired using an STL11000M ccd camera with a Takahashi FSQ106, and each of the two frames was built from five 600s luminance subexposures.

Calibration & stacking were done with the latest version of MaximDLPro, and the processing was done using PS CS3 with Noel Carboni's Actions & Annie's Astro-tools.

Which version do you like better, and why? Is one more 'natural' looking than the other? Is one more 'accurate'? Any comments, feedback, and constructive criticism would be most helpful ! :-) Thanks! :-)
Comment by Derek Baker on July 5, 2011 at 8:40pm
The original data came from an image I took with my U16M ccd camera & Takahashi FSQ106N, while in Chile in March 2010.

I had wanted to get more data, but a power outage prevented me from doing so.

Recently, I did some remote observing and gathered a bit more luminance data using an STL11000M and Tak FSQ106N. This also encouraged me to reprocess all the data from the ground up, using the better software I have plus my improved processing skills.

Folks, I'm interested in your assessment of this image, as compared to my previous version (also in my photo folder here). Are the colours too bold? Is it too contrasty? What was done better this time, or more poorly done this time? Let me know! :-)
Comment by Derek Baker on June 24, 2011 at 10:40am
Hey folks. I have been taking images of IC4592 and other parts of the Blue Horsehead Nebula remotely with a Takahashi FSQ106 and an STL11000M camera. I am posting a luminance image that I have processed, and I'd like some feedback on it. For starters, I know there is some faint nebulosity in the area near the head of the horse, but I worry that I'm just accentuating noise or sky background. I am trying very hard to avoid clipping the blacks while having the subtle nebulosity stand out against the darkest parts of the field, however I'm not 100% sure I have pulled it off. I could use some feedback, including those who know this object and may have imaged it before (I see some gorgeous shots of The Blue Horsehead on this site!). Here's my workflow so far: a. 6x10min lum shots. b. save as FITS (IEEE float) c. remove bad pixels/columns d. Align, Stack & Sigma clip combine. (a. --> e. in MaximDLProv5 then open in PS CS3) e. Two passes of Noel Carboni's 'Remove Space Noise'. f. Several Coarse & Medium passes in 'Gradient Xterminator'. g. Some levels & curves to bring out nebulae. h.Use Annie's Astrotools to remove stars to process just nebulosity. i. Levels/Curves several times to stretch image of nebulosity then Carboni's Remove Space Noise. j. Sharpen stars & levels in stars-only layer k. Merge stars only layer back with nebulosity only layer. l. final tweaking of brightness/contrast, then m. save full res imge then, resize for web and save that image for sharing. I know that this is a lot of steps, but that doesn't mean that I have done it the best way possible, so I'd appreciate your input!! Thanks! Derek
Comment by David Klooz on June 9, 2011 at 3:10am
Thanks Marc....always used star reduction with my sbig, but think they look so small compared to what they used to I haven't used it with the Canon. I'll give it a go - also I'll start laying off the 'star filter' and see if both help the overall look. Continuing to learn with the ddp, stretch and curves in Neb2 so very good point. Like my colors on my shots I always need to work on holding back!!. In for a few days of rain, then going to try some neb shots with just the telephoto and see how they look. Starting to feel more comfortable with the Canon and the Neb2 program. Dave
Comment by Marc Basti on June 8, 2011 at 6:08pm
David, if it were mine, I'd work on the stars a bit. Maybe some star reduction and/or 1-2pix blur. To me, the stars are hogging the pic and not letting the nebula be the main attraction. Good contrast inside the neb, maybe mess w/that some more w/curves and a layer mask. You got a lot for short time- good job, Marc
Comment by samiam on June 7, 2011 at 4:06pm
Steve , you're killin' me with your group photo. I almost peeed my pants ! LOL
Comment by David Klooz on June 7, 2011 at 3:55pm
All of these are taken with about 1 1/2 hours Ha and 1 hour LRGB and combining. The only one I haven't combined is M20 and M8-not enough dark sky yet in the morning. Anyway, let me know what you think. Dave

Members (18)



© 2024   Created by Charles Dunlop.   Powered by

Badges  |  Report an Issue  |  Terms of Service