tooth_dr

3-D print a collar?

We had cloud forecast but yet it was completely clear from sunset to 1am.  The seeing was bad up until 22:30 then I got 10 really decent 10mins subs Oiii.  However somehow I now have tilt in my second camera - i cleaned everything at the start of the  week, so I think the EFW2 and camera connection may be tilted a bit.  It's only uses 2 small grub screws.  Shame as the data looked good otherwise.  I packed up at 1am as clouds started forming and I had work today, and rain was potentially forecast for laster in the morning.

Could it be the internal battery CR2032 battery?  I recall a issue with a Dell PC of mine that did that.

1 hour ago, smr said:

Thank you guys. I've decided I'm going to try and get as much data on this as I can. I've got 7 hours now and am seeing a difference in the data. I'm going to try and get 20-30 hours for the first time (longest I've gone is 7 hours on any DSO) to see what the result should look like then.

Look forward to seeing that. I actually did 2 hours on the Leo triplets and then up to 8 hours and then added another 16 hours.  The biggest difference was from 2 to 8. The 8 to 24 was worthwhile but I would say for my DSLR 8 hours was the sweet spot. 

Hi

I just picked up a 178, how are you getting on with this project?

@ollypenrice Thanks again.  I'll try that:

1) a bias as a dark

2) the same bias as a dark flat

3) the flat as normal

4) what about a BPM??

Sorry I can’t help but that’s lovely data.  Will be interested in how this is done also. 

Class job. M27 looks so colourful. Did you find much focus change. I’ve been guilty of not changing focus from one session to the next (unless you took the camera off?)

Very exciting thread, the eq8 is impressive, but clearly in very capable hands. Well done. 

5 minutes ago, Hughsie said:

Narrowband would be an option on imaging, no worrying about the Moon or street lights. Astrodons if you have downsized and released a ton of cash or Baader/Astronomik for us mere mortals.

Unfortunately also wouldn’t be downsizing.

Is there any advantage to upgrading to a good fast scope eg Tak Epsilon over my current twin ED80 arrangement? Are the 3nm Astrodons effective at eradicating light pollution?

8 minutes ago, Peter Drew said:

It might result in considering solar observing and imaging a higher priority than at present.     😎

I have a 60mm solar scope but it gets used much less than I anticipated due to any sunny days I’m off work being spent with the kids.

I should add I’m 100% imaging and rarely do any meaningful observing. 

We are considering moving into the town and out of the country. Unfortunately this means my nice skies will be left behind.  Travelling to a dark site just isn’t practical for me. So in preparation I’ll need to consider my options. I’m going to get a dome which should provide some shielding. What would be the ideal scopes, cameras and filters for this type of sky?

TIA

Adam. 

1 hour ago, mark skelton said:

I tried dss It di'unt like the deverent file sizes

APP can combine both sizes but you wouldn’t stack them together at once.

I would stack one set first, but take a note of the reference sub chosen by APP. I would then do a second stack and use the reference sub from the first stack as your reference. This will line up the second set of data with the first set so that it can be easily processed in PS.

Deep Sky Stacker is also a good option. It’s simpler to use and free but not just as good overall 

1 minute ago, mark skelton said:

Can that handle deferent file sizes as my ha file size is 970 x 730 and the rgb files are 1940 x 1460?

It can handle anything thrown at it.  Those file sizes would not be a problem, even if there were 100s of them. 

I use Astro Pixel Processor. 

What a splendid image 👍🏻👍🏻

Interesting, proving there is no right answer for everyone!

Just to clarify - you use bias-as-darks also with bias-as-bias?

Lovely colouration, pale but yet contrast, and the stars are really shining.  A very nice image, look forward to seeing more of your images.

I felt my face getting warm with that colour version, FIRST CLASS!!

45 minutes ago, Gina said:

Have the widefield rig running with 28mm f3.5 lens using ROI to crop image before downloading to reduce the amount of data.  120s Ha subs of Cygnus.

Gina, it never fails to impress me how tech savvy you are!

Photoshop used to reduce colour noise on right 1/2 of image, with left half as post above.  Plus a GIF cycling between the original and colour-noise reduced image, both processed identically, and enlarged 200%.  Finally a copy with some light processing.  Has this helped with the colouration problem you were talking about?

Thanks

Adam.

Is that the stacked image after processing?

Edit- just seen the last line of your post.

PS camera raw filter does a good job of reducing that colour noise. 

2 hours ago, maw lod qan said:

I started clicking on them one by one and having looked at each in close detail I have to agree.

Spectacular images!

You’re right. You really need to click on them and they are really something else

Mighty impressive hoard Francis. Just one night I’d say that’s a huge success