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Last post

How to determine final image quality quantitatively?

Last post by Stuart « Wed Sep 25, 2019 11:43 pm
Replies: 12
by ram » Fri Aug 23, 2019 12:27 pm

First post

I'm a big believer in creative decision making yet when I first integrate images (i.e., human judgement), I'd like to be able to throw out versions...

Last post

The way I do it is start with blink and I throw out the bad ones. I'm actually pretty brutal, and I am working with a dataset where I threw out 60%...

12 Replies

3498 Views

Last post by Stuart
Wed Sep 25, 2019 11:43 pm
Wide field processing help required

Last post by OzEclipse « Sat Sep 21, 2019 9:26 pm
Replies: 25
by Jockinireland » Mon Sep 09, 2019 8:06 am
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2
First post

So, my second night out with StarAdventurer mount, Canon Eos1100d, Kit 18-55 EFS F3.5 lens at about 24mm and F4.6.

Clouds were tormenting me again...

Last post

David,

Looking real good!

Joe
25 Replies

6374 Views

Last post by OzEclipse
Sat Sep 21, 2019 9:26 pm
Adam Block PI Fundamentals

Last post by Stuart « Sat Sep 21, 2019 2:35 am
Replies: 8
by bradleybcraig » Fri Sep 20, 2019 8:04 pm

First post

Greetings!

So I came across a few videos on YouTube from Adam Block. Looking further I found his Adam Block Studios website and subscribed to his PI...

Last post

Hi,
I also recommend Adam Block's tutorials. He's a good explainer, and by the time you're done with whatever thing you're looking at you'll...

8 Replies

2336 Views

Last post by Stuart
Sat Sep 21, 2019 2:35 am
Elephant trunk help?

Last post by Larry 1969 « Thu Sep 19, 2019 10:02 pm
Replies: 12
by Larry 1969 » Sun Aug 18, 2019 6:45 pm

First post

Hello all!
I'm not exactly sure where to post this since it's more of a question but it does include a pic!
I'm using very limited equipment (see...

Last post

Thanks yobbo!

I'm still very new to photography. I was actually surprised to get anything at all that night. I've since figured out plate solving...

12 Replies

3386 Views

Last post by Larry 1969
Thu Sep 19, 2019 10:02 pm
Darn... a new dust doughnut!

Last post by UlteriorModem « Thu Sep 19, 2019 1:53 am
Replies: 6
by UlteriorModem » Fri Sep 13, 2019 2:47 am

First post

I was working on some data I got about a week ago. It is one panel out of a Mosaic of M45.

When I integrated it and stretched it.. sassin frassin...

Last post

Had a few minutes to process the next panel of the mosaic. Now all I need is a few hours to collect the rest :D

Stretched 2 by Tom Whit , on Flickr

6 Replies

2100 Views

Last post by UlteriorModem
Thu Sep 19, 2019 1:53 am
My Exposure+ISO Test

Last post by madperk « Sat Sep 14, 2019 8:43 am
Replies: 5
by fatboy1271 » Tue Aug 20, 2019 6:24 pm

First post

Working with M27 I did four nights, each with 2 sets of different exposures + ISO. Below is a screenshot of the Preprocessed versions.

First two...

Last post

I stand corrected Kathy. I still want to think of ISO in film terms of sensitivity to light. Sometimes it hard to shake 25 years of shooting film.

5 Replies

2197 Views

Last post by madperk
Sat Sep 14, 2019 8:43 am
Using PixInsight to Reduce Halos Around Bright Stars

Last post by STEVE333 « Fri Sep 13, 2019 2:44 am
Replies: 4
by STEVE333 » Fri Sep 06, 2019 3:29 am

First post

I have been enjoying my current AP setup , but, have been having halos around all the bright stars. I've come up with the technique described below...

Last post

Interesting approach Steve. I’ve been using a contours star mask (‘contours’ being an option under the Mask Generation heading in the ‘StarMask’...

4 Replies

5058 Views

Last post by STEVE333
Fri Sep 13, 2019 2:44 am
StarTools help?

Last post by Larry 1969 « Sun Sep 08, 2019 6:47 pm
Replies: 6
by Larry 1969 » Sun Sep 08, 2019 3:53 pm

First post

Hello all!
The latest version of StarTools is giving me some trouble. I have been using the workflow that bladekeeper hooked me up with here.
The...

Last post

I used 2 on that setting.

Thanks!

Was your master dark comprised of dark frames close to the same temperature as your lights (camera sensor...

6 Replies

2068 Views

Last post by Larry 1969
Sun Sep 08, 2019 6:47 pm
Star Tools

Last post by bladekeeper « Sat Sep 07, 2019 4:22 am
Replies: 4
by mcolbert » Thu Aug 29, 2019 8:40 pm

First post

From

an announcement of version 1.5 available for download.

Last post

Hey bladekeeper!
Any adjustment to the workflow with the new 1.5 version?
I tried it out the other night and I like the pre tweek button in some...

4 Replies

1659 Views

Last post by bladekeeper
Sat Sep 07, 2019 4:22 am
Work Flow Questions

Last post by Baskevo « Thu Sep 05, 2019 8:29 pm
Replies: 2
by Baskevo » Thu Sep 05, 2019 8:22 am

First post

Hey guys! Hope everyone is having some clear skies. I feel I am getting closer to getting a good picture. I've been able to get focus and good polar...

Last post

Thanks, Bob! I'm going to try for another imaging session tonight, if the night allows it, with more exposure and ISO. I will definitely use that...

2 Replies

1310 Views

Last post by Baskevo
Thu Sep 05, 2019 8:29 pm
Up To Date Lightroom / Photoshop Stacking Tutorial????

Last post by Rmdigby « Sat Aug 31, 2019 8:58 pm

by Rmdigby » Sat Aug 31, 2019 8:58 pm

I just signed up for the Adobe Photographer's Lightroom/Photoshop package (I also have need for the software in my business) and I cannot find a star...

0 Replies

925 Views

Last post by Rmdigby
Sat Aug 31, 2019 8:58 pm
(re)using old photos

Last post by yobbo89 « Sat Aug 31, 2019 5:41 pm
Replies: 5
by Star Dad » Thu Aug 29, 2019 5:28 pm

First post

Does any one have an opinion on stacking old photos with new? What I'm asking is - should I keep the original images (say taken 1 year ago) and stack...

Last post

i keep my data, year after year, when that target comes around i grab the old data and add it to the new one, delete anything that has above average...

5 Replies

1892 Views

Last post by yobbo89
Sat Aug 31, 2019 5:41 pm
Dither vs Darks in removing pattern noise from images

Last post by yobbo89 « Thu Aug 29, 2019 4:43 pm
Replies: 7
by bobharmony » Sun Aug 25, 2019 10:56 pm

First post

As I am prone to do, I sometimes wonder if dither is more or less effective that darks in eliminating the pattern noise associated with DSLR imaging....

Last post

large dithering also helps reduce reflections from bright stars, you should really dither or dither

7 Replies

2684 Views

Last post by yobbo89
Thu Aug 29, 2019 4:43 pm
Image Colour

Last post by yobbo89 « Thu Aug 29, 2019 4:27 pm
Replies: 8
by Graeme1858 » Wed Aug 28, 2019 5:03 am

First post

This was from a post in the Competition Submissions section but it was getting a bit off topic.

If you post a link (via dropbox or other file...

Last post

Cheers Yobbo

That's a lovely bright image. Really must go and revisit some old stuff! What software would you use for wavelet after the processing?...

8 Replies

2291 Views

Last post by yobbo89
Thu Aug 29, 2019 4:27 pm
How Meticulous Should I be with Flats Histogram?

Last post by fatboy1271 « Thu Aug 29, 2019 12:10 am
Replies: 5
by fatboy1271 » Sun Aug 11, 2019 6:54 pm

First post

I finally got an LED Light Panel and it is Awesome!!! It's intended use if for tracing art: however, it is fantastic for Flats.

This morning I shot...

Last post

Thanks Stuart! I figured PI could do it; I just didn't know what Process.

5 Replies

1610 Views

Last post by fatboy1271
Thu Aug 29, 2019 12:10 am
Drizzle vs flats in removing pattern noise from image

Last post by Stuart « Wed Aug 28, 2019 11:32 pm
Replies: 4
by bobharmony » Sun Aug 11, 2019 1:55 am

First post

As I am prone to do, I sometimes wonder if drizzle is more or less effective that darks in eliminating the pattern noise associated with DSLR...

Last post

Dithering improves signal to noise by moving the camera around so that hot pixels don't pile up on the same spot.
Flats improve image quality by...

4 Replies

1881 Views

Last post by Stuart
Wed Aug 28, 2019 11:32 pm
Histogram looking OK?

Last post by maceemiller « Tue Aug 27, 2019 10:53 pm
Replies: 5
by maceemiller » Tue Aug 27, 2019 7:59 pm

First post

Hi all.

So tonight I had a quick test of eyepiece projection with my webcam. Nothing crazy, just wanted to see if I could get it working with...

Last post

Here are two examples of what the histogram should look like for both a DSO and a planetary image. The first is a single image of the Omega Centauri...

5 Replies

1813 Views

Last post by maceemiller
Tue Aug 27, 2019 10:53 pm
Colour from Canon CR2 Files

Last post by Graeme1858 « Tue Aug 27, 2019 6:12 pm
Replies: 7
by Graeme1858 » Mon Aug 26, 2019 6:29 am

First post

I'm using a Canon 600D and pulling the CR2 files into DSS. My attempt at M27 this month has 40 x 30 second lights, 20 darks and 30 bias files. The...

Last post

I've had this same problem with DSS while processing M27. I couldn't figure out what was going on or what I was doing wrong. Finally, in a desperate...

7 Replies

2423 Views

Last post by Graeme1858
Tue Aug 27, 2019 6:12 pm
NGC 7635, Bubble Nebula - Anyone wanna play?

Last post by Sky « Sun Aug 25, 2019 9:01 pm
Replies: 20
by bladekeeper » Sun Jul 28, 2019 2:29 am
1

2
First post

Here is a stack I captured last night:

65x180s lights, 15 each darks, flats, dark flats, and bias.

If you are bored, clouded out, or want some...

Last post

I'm a little late to the party. So, here's a different take on the Bubble using the posted data. Minimizing the number of stars and maximizing the...
20 Replies

5404 Views

Last post by Sky
Sun Aug 25, 2019 9:01 pm
Full Moon

Last post by Baurice « Mon Aug 19, 2019 11:32 am
Replies: 10
by Star Dad » Sun Aug 11, 2019 10:23 pm

First post

To AP or not to AP when at or near the Full Moon? It seems where I live in CT we only get 4 clear nights a month and inevitably one of the good...

Last post

Well, yes, I rather like the full moon with its ray systems and will do a quick DSLR shoot or get my Bresser Electronic Eyepiece out and get some...

10 Replies

2531 Views

Last post by Baurice
Mon Aug 19, 2019 11:32 am
A weird thing happened with PI last night!

Last post by UlteriorModem « Mon Aug 19, 2019 1:31 am
Replies: 9
by UlteriorModem » Tue Aug 13, 2019 6:00 pm

First post

Okay I must admit it was late and I had a few adult beverages, but I was playing with an image in PI and for whatever reason I could not stretch the...

Last post

Well I will be! It is doing it again!

I swear I am using the program the same as I always have but not it wont stretch images! Sometimes it does...

9 Replies

2474 Views

Last post by UlteriorModem
Mon Aug 19, 2019 1:31 am
Help with RGGB BGGR in DSS using ZWO 294mc Pro

Last post by jmfloater « Sun Aug 11, 2019 8:59 pm
Replies: 1
by TheButcher » Sun Aug 11, 2019 1:39 am

First post

Hey all,

For some time now I have been trying to figure out why my images when stretched using curves would be blue instead of Red. For my past...

Last post

I've heard that one way to check if you have the bayer matrix correctly identified is to use your setup to shoot a daytime image of your surrounding...

1 Replies

1115 Views

Last post by jmfloater
Sun Aug 11, 2019 8:59 pm
Some fun with flats.

Last post by bobharmony « Fri Aug 09, 2019 11:14 pm
Replies: 4
by Thefatkitty » Fri Aug 09, 2019 1:31 pm

First post

It's Friday, that can only be a good thing :D

Yesterday was fairly clear here. My ever-shrinking bladder decided I needed to get up just after 4 AM...

Last post

Good to hear you are enjoying the dabbling Mark. That is a nice start on the Pleiades, and takes a lot of patience to guide manually. You are...

4 Replies

1478 Views

Last post by bobharmony
Fri Aug 09, 2019 11:14 pm
StarTools work through?

Last post by Larry 1969 « Thu Aug 08, 2019 11:32 pm
Replies: 11
by Larry 1969 » Wed Aug 07, 2019 12:04 am

First post

Hello all!

I've recently posted about DSS and StarTools running out of memory and, lo and behold, it was my crappy computer...……. :sigh:
I have...

Last post

Thanks Bob!

11 Replies

3237 Views

Last post by Larry 1969
Thu Aug 08, 2019 11:32 pm
Triad Filter and dualband filter questions

Last post by TheButcher « Thu Aug 08, 2019 4:54 pm
Replies: 2
by TheButcher » Mon Aug 05, 2019 4:15 pm

First post

Has anyone tried a Triad or a Dualband STC filter on thier ZWO 294MC- P? Alaso has anyone tried using a 1.25 filter with the adapter on the 294mc...

Last post

Thanks Steve for the very informative response. That helps my decision. It could to know that I should opt for the 2' then be stuck with the 1.25 ....

2 Replies

1274 Views

Last post by TheButcher
Thu Aug 08, 2019 4:54 pm

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