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Messages - dpaul

Pages: [1] 2 3 ... 9
1
General / Re: Release 01.08.06 - 2 versions?
« on: 2018 December 24 16:01:13 »
Hi Niall
No problems, I quickly did the upgrade again.
Regards
David

2
General / Re: Release 01.08.06 - 2 versions?
« on: 2018 December 23 11:27:51 »
Ok Mike thanks,

I was just surprised it was so soon - no problem!

David

3
General / Release 01.08.06 - 2 versions?
« on: 2018 December 22 18:28:38 »
Last week I downloaded the new 01.08.06 version of Pixinsight (01.08.06.1447). Now I saw a new notification saying version 01.08.06.1448 telling me I need to repeat the whole process again.
I can't see any reference on the form regarding two versions of 01.08.06?


Is this a fix to some problems with the 1447 version?



David

4
General / Re: LAST UPDATES?
« on: 2018 December 15 15:06:11 »
Ok Rick, thank you!

David

5
General / LAST UPDATES?
« on: 2018 December 14 16:29:09 »
Hi

Just wondering what the most update was?  My last one was June 2018 and each time I've checked since its says I have the latest version. I've had PI for about 1 year and in the early days thee were regular updates.

Thanks

David

6
General / Re: Need new computer
« on: 2018 December 09 15:33:14 »
Hi,
I've got a Dell XPS 15'' 9560 laptop. This has 32 RAM, i7 processor and a 4K screen which makes a huge difference in image quality and color definition. Also the screen is right to the edge of the design so its one of the smallest 15'' laptops available and a 7hr battery life. I use it outdoors and it very durable in extreme cold temperatures down to at least -5 deg C.

Its not available anymore from Dell, they have replaced it with the XPS 9570 with a different processor but the differences aren't huge. Its still possible to get the 9560 on Amazon currently.


Hope this is useful

David

7
General / Re: Benefit of Drizzle?
« on: 2018 October 05 12:31:45 »
Thanks Rick

David

8
General / Re: Benefit of Drizzle?
« on: 2018 October 04 16:45:40 »
Rick

Here is one more 2x2 binned image.

David

9
General / Re: Benefit of Drizzle?
« on: 2018 October 04 16:43:32 »
Rick

Here is the 2x2 binning (I can't seem to add two images at once on this forum - they were not too big either?)

David

10
General / Re: Benefit of Drizzle?
« on: 2018 October 04 16:42:07 »
Sorry Rick

Here are the attachments

David

11
General / Re: Benefit of Drizzle?
« on: 2018 October 04 16:40:46 »
Hi Rick

Thanks for the reply - I do appreciate with 2x2 binning I am oversampling but I still seem to get more detail from deep sky objects with 2x2 compared to 3x3 or 4x4.
Attached are 2 versions of NGC 891 that demonstrate this.

Regards

12
General / Re: Benefit of Drizzle?
« on: 2018 October 04 16:29:16 »
Rob

Thanks for your reply, that's what I expected.

David

13
General / Benefit of Drizzle?
« on: 2018 October 03 17:58:25 »
Hi

Can someone give me advice on whether adding drizzle files during integration will ''in my case'' help?  I have a 30'' F3.5'' scope which when used with a Paracorr means the focal length is just over 3 metres.
I'm using a CMOS camera with 3.8 pixel size and using 2x2 binning. I know this is seriously over-sampled but I'm generally happy with the results, aided by the superb optics from Mike Lockwood.

So here's my question - I think I've seen Juan's original announcement of adding Drizzle in 2014 and there may have been comments where it helps with ''under-sampled'' images. So in my case would I expect any benefit?  I'm still confused about what drizzle is really doing but doesn't it make the image less ''grainy''?  I tried redoing an image for the very first time by adding drizzle files (there were plenty of frames, 25 in this case and I used linear rejection during image integration). It did seem to make a small difference, a little less noisy maybe?

Any comments from experienced users are very welcome. Sometime I use 3x3 or 4x4 binning with narrowband so would that be more beneficial then?

Thanks

David

14
Gallery / IC 5146 (Cocoon Nebula)
« on: 2018 August 07 16:05:30 »
Attached image was taken with an Atik Horizon CMOS camera - LRGB filters.
Scope is 30'' F3.5 with Lockwood optics on an 'unguided equatorial platform'.
Each frame was 25 seconds and about 20 frames integrated per filter.

Technically speaking with a 105'' focal length and 3.8 pixel size this is seriously over-sampled. I used 2x2 binning which helps reduce star bloating.

David

15
General / Re: STAR ALIGNMENT DIFFICULTY
« on: 2018 July 20 17:41:51 »
Hi John

Apologies for the slow reply - Unusually for me I haven't logged in for a while (too many clear nights in last 4 weeks).

thanks for the advice

David

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