Image processing

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A weird thing happened with PI last night!

Last post by UlteriorModem « Wed Aug 14, 2019 1:41 pm
Replies: 8
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...

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Thanks for the offer Stuart, but it started working again. No idea what the heck I was doing wrong.

8 Replies

122 Views

Last post by UlteriorModem
Wed Aug 14, 2019 1:41 pm
How Meticulous Should I be with Flats Histogram?

Last post by Stuart « Wed Aug 14, 2019 5:19 am
Replies: 2
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...

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I wouldn't use a histogram at all. Use the average ADU. For a 16 bit scale shoot for an ADU between 25,000 and 35,000

2 Replies

50 Views

Last post by Stuart
Wed Aug 14, 2019 5:19 am
Full Moon

Last post by STEVE333 « Tue Aug 13, 2019 8:49 pm
Replies: 8
by Star Dad » Sun Aug 11, 2019 10:23 pm

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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...

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Over the past week I was able to get out twice to image the Elephant's Trunk Nebula. The average moon phase was 85%. Not full, but, pretty close....

8 Replies

92 Views

Last post by STEVE333
Tue Aug 13, 2019 8:49 pm
NGC 7635, Bubble Nebula - Anyone wanna play?

Last post by bladekeeper « Tue Aug 13, 2019 3:00 am
Replies: 17
by bladekeeper » Sun Jul 28, 2019 2:29 am

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...

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It looks great, Henk! :)

17 Replies

239 Views

Last post by bladekeeper
Tue Aug 13, 2019 3:00 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

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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...

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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

38 Views

Last post by jmfloater
Sun Aug 11, 2019 8:59 pm
Drizzle vs flats in removing pattern noise from image

Last post by bobharmony « Sun Aug 11, 2019 1:55 am

by bobharmony » Sun Aug 11, 2019 1:55 am

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...

0 Replies

44 Views

Last post by bobharmony
Sun Aug 11, 2019 1:55 am
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...

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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

65 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

177 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...

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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

78 Views

Last post by TheButcher
Thu Aug 08, 2019 4:54 pm
Libraries: Bias, Darks, Flats

Last post by fatboy1271 « Thu Aug 08, 2019 12:35 am
Replies: 8
by fatboy1271 » Wed Aug 07, 2019 5:53 pm

First post

What's the general opinion on keeping a library for Bias, Darks, and Flats?
I was under the impression that at least Darks should be at the same...

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Thanks Bob! May I ask what your Flat taking process is? I use my laptop screen and a t-shirt:
Not sure if the laptop screen is the right way to go...

8 Replies

85 Views

Last post by fatboy1271
Thu Aug 08, 2019 12:35 am
DSS out of memory?

Last post by Larry 1969 « Fri Aug 02, 2019 10:35 pm
Replies: 15
by Larry 1969 » Sat Jul 27, 2019 9:22 pm

First post

Hi all!
I've learned quite a bit over the past few months and I finally had a beautiful night to get out there and give it a try.
I shot 180 X 15sec...

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Hi Larry,

I have only been using DSS for about a year, but I’ve never had any issues.

If you are interested, the link below points to my settings...

15 Replies

181 Views

Last post by Larry 1969
Fri Aug 02, 2019 10:35 pm
DSS text and master dark files.

Last post by Larry 1969 « Fri Aug 02, 2019 10:32 pm
Replies: 13
by Larry 1969 » Mon Jul 08, 2019 12:16 am

First post

So, I've been going through my data and trying to organize it all and I found all these text documents in along with my raw data.
I deleted them all...

Last post

I thought you were sleeping! :asleep:

13 Replies

235 Views

Last post by Larry 1969
Fri Aug 02, 2019 10:32 pm
Elephant Trunk Nebula and M16 Exposure Gain Questions

Last post by TheButcher « Mon Jul 29, 2019 8:10 pm

by TheButcher » Mon Jul 29, 2019 8:10 pm

Hey all

I am curious to know a decent (estimated exposures for these two objects with gain) I want to know if I am taking too long of single...

0 Replies

60 Views

Last post by TheButcher
Mon Jul 29, 2019 8:10 pm
Combining OSC + L + SHO data on M33?

Last post by ram « Mon Jul 29, 2019 8:30 am

by ram » Mon Jul 29, 2019 8:30 am

Hi all, I previously took some mono shots of M33 with my QHY163M using an L filter and then I also took some shots with the Ha, O3 and S2 filters...

0 Replies

37 Views

Last post by ram
Mon Jul 29, 2019 8:30 am
Wit's end, need help

Last post by Lokifish « Mon Jul 29, 2019 2:25 am
Replies: 13
by Lokifish » Sat Jul 27, 2019 9:17 pm

First post

This will read like a mess but I really am that desperate at this point.

Everything I shoot with my 183C has an obvious magenta gradient except for...

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I eliminated the possibility of it being ambient conditions as it would require the exact same conditions were present for every point in the sky....

13 Replies

192 Views

Last post by Lokifish
Mon Jul 29, 2019 2:25 am
Drizzle, LocalNormalisation, etc. etc.?

Last post by Stuart « Wed Jul 24, 2019 5:01 am
Replies: 13
by ram » Mon Jul 15, 2019 6:45 pm

First post

Hi all, I've been getting into the depths of PI and I'm questioning the value of it. Previously all I did was reasonably careful calibration,...

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In terms of DBE, there are a couple of tricks. Increase the box size from the default of 5 to about 15-20. Also, I find I always have to increase the...

13 Replies

230 Views

Last post by Stuart
Wed Jul 24, 2019 5:01 am
Rgb Bayer osc flter?

Last post by ruthlessaz « Sat Jul 20, 2019 7:23 pm
Replies: 3
by ruthlessaz » Thu Jul 11, 2019 8:16 pm

First post

I know this may be a dumb question.....but is there a one shot color filter out there, for monochrome cameras? Just curious.

Thanks

Adam

Last post

Thank you for the help here, I figured as much. I have a 1600 mobo, with filters, but I feel it's time consuming etc. Maybe thinking if one day...

3 Replies

126 Views

Last post by ruthlessaz
Sat Jul 20, 2019 7:23 pm
Veil NB mosaic project

Last post by ram « Thu Jul 18, 2019 6:36 am
Replies: 17
by ram » Tue Jul 16, 2019 11:39 pm

First post

As I mentioned in another thread about the benefits of preprocessing, I'm having trouble with GMM and in general creating a decent mosaic in

My two...

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So I managed to get your process to work pretty smoothly. I did both dnaLinearFit and then TGVdenoise to match up the noise levels and then with GMM...

17 Replies

154 Views

Last post by ram
Thu Jul 18, 2019 6:36 am
DSS and StarTools???

Last post by Larry 1969 « Tue Jul 16, 2019 2:51 am
Replies: 32
by Larry 1969 » Sun Jul 14, 2019 1:09 am
1

2
First post

Hello again all!

The learning curve continues but I'm not giving up!
First of all I must say, with my less than ideal equipment and complete...

Last post

I've never had that particular issue with Dropbox.

Anyway, it appears the file is no longer there?

Crazy!
When I click the link it starts to...
32 Replies

345 Views

Last post by Larry 1969
Tue Jul 16, 2019 2:51 am
Mosaic Compilation

Last post by JimMinCT « Sun Jul 14, 2019 11:31 pm
Replies: 1
by Aidi » Sun Jul 14, 2019 9:28 pm

First post

I'm going to give creating a mosaic a bash.. Image capture side of things seems to be ok... Hoping to capture a few test frames tonight which covers...

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I use the Gradient Merge Mosaic tool in PI. I have not tried ICE, but have seen very nice images done with it.
Good Luck!
Here's a good video on it.

1 Replies

55 Views

Last post by JimMinCT
Sun Jul 14, 2019 11:31 pm
Planetary Processing and My Latest Saturn Image

Last post by helicon « Fri Jul 12, 2019 11:54 pm
Replies: 10
by fatboy1271 » Wed Jul 10, 2019 9:40 pm

First post

Hi All,

I shot some video with my ASI120MC last night of Saturn; 20 videos at 1000 frames each. Using AutoStakkert I got some pretty decent images;...

Last post

Nice images and thanks for sharing them.

10 Replies

153 Views

Last post by helicon
Fri Jul 12, 2019 11:54 pm
Pixinsight - BPP vs Manual

Last post by Stuart « Fri Jul 12, 2019 6:44 pm
Replies: 13
by Aidi » Mon May 20, 2019 7:31 pm

First post

Knowing there is quite a good following in here with users using PI.. Whats the thoughts on using BPP for calibration, registration, stacking etc vs...

Last post

Hi Ram,
You can use BPP to calibrate the images by clicking calibrate only and then go manually from there.

13 Replies

311 Views

Last post by Stuart
Fri Jul 12, 2019 6:44 pm
Eagle Nebula Ha and Oiii data for processing

Last post by Graeme1858 « Tue Jul 09, 2019 8:24 pm
Replies: 5
by STEVE333 » Mon Jul 08, 2019 2:47 am

First post

I recently captured a little data on the Eagle and Omega nebulae in a WFOV image. The data was collected with a DSLR and a Duo-Narrowband filter....

Last post

I had another go just for the craic! It's still not going to win any awards but I now know a lot more about using layers in Gimp. All I have to do...

5 Replies

150 Views

Last post by Graeme1858
Tue Jul 09, 2019 8:24 pm
Pixinsight or something else!?

Last post by Stuart « Mon Jun 24, 2019 8:50 pm
Replies: 16
by Jennifer Christine » Fri May 17, 2019 7:51 am

First post

I had a go at pixinsight and found it too time consuming.
I use an old version of photoshop and skystacker.
My images are OK but not incredible as...

Last post

I’m still very new to AP (7 months) and have a pretty strong PS background & own PS CS5 Extended but just recently got PI & also Adam Block’s...

16 Replies

437 Views

Last post by Stuart
Mon Jun 24, 2019 8:50 pm
Need some feedback on my images

Last post by chicagorandy « Sun Jun 23, 2019 2:37 pm
Replies: 11
by Lokifish » Thu May 16, 2019 5:13 pm

First post

So I'm trying to decide on which format to use on my bordered images. The first has basic target info, gear used, and exposure data. The second...

Last post

Well, since the tech info of #2 is lost on ME, I'll side with those who voted for #1.

11 Replies

273 Views

Last post by chicagorandy
Sun Jun 23, 2019 2:37 pm

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