View Full Version here: : First light with DMK41
11-06-2012, 09:52 AM
Well second light really after a quick (disastrous) test last week...
A few pictures of the Moon taken this morning with my new DMK41. The seeing was quite good (6.5) and I took quite a lot of AVIs. I have processed 3 in RegiStax 6 and quickly touched up the resulting stacks in PhotoShop.
I am quite happy with myself and with the camera. The real-estate is fantastic with the DMK41:) I will reprocess the pictures as they are grainy, but these ones give an idea of what can be achieved with the camera.
11-06-2012, 10:35 AM
Impressive results, Eric. Last one does look a bit grainy though - maybe pushed a bit too far. Good field of view.
11-06-2012, 12:47 PM
Thank you Graeme. You are right, I may have pushed the third one too far, unless I had too much gain on the camera. I am still very new to lunar photography and I have a lot to learn!
I wll add other photos as I process them.
Nice Job Eric. Great detail inthere.
11-06-2012, 04:17 PM
Here is another one. Have I pushed that one a bit too much?
11-06-2012, 05:55 PM
Very nice Eric. :thumbsup:
Sure beats a-focal photography.
11-06-2012, 06:32 PM
11-06-2012, 07:52 PM
I have re done the 3rd picture in my first post. Hopefully, this version is less grainy.
12-06-2012, 11:51 AM
Certainly getting there, just make sure the gain is turned right down for moon captures, it gets rid of that graininess.
12-06-2012, 05:21 PM
Thanks Peter! I think I can also improve the focus slightly. Anyway, I am having a ball:D
13-06-2012, 05:21 PM
Still processing AVis. Here is the best one so far. I am very pleased with the result.
Edit: the second picture is a smaller version. Not as big on the screen.
13-06-2012, 05:48 PM
Getting quality results Eric. :thumbsup:
Once again, you have stirred my interest.
I will have to blame you for my gutting of the family webcam and rigging it to an eyepiece tube. I can now dip my toes into slightly more advanced astro photography. It is time to move away from the a-focal method.
Now to hide it from SWMBO.....:)
13-06-2012, 07:24 PM
Have a go Stu. I'll take the blame.
I must say, there is quite a bit of difference between the pictures I took with the mod webcam (Microsoft VX3000) and these ones taken with the DMK. Besides the definition, the tones are much richer with the DMK (see here http://www.iceinspace.com.au/forum/showthread.php?t=87480). Just love it!
Strangely enough, I am able to use the DMK41 with the SW tube fully extended, which was impossible with the webcam and with the DMK21 I borrowed from Poita. Now I still have 6mm rack in to spare.
I have had a quick go at using the DMK41 with a Barlow x 3 on the Moon. But I couldn't see anything no matter the focus.I wonder why...
15-06-2012, 12:30 PM
they are great, are you using any kind of comma corrector.
15-06-2012, 08:28 PM
Hi Clinton! No I am not using anything. Should I?
17-06-2012, 08:00 AM
dont know Erik, but those shots are great so i would think not. have you done any long exposure stuff yet with the set up you have.ie how acurate is the tracking on your dob.
17-06-2012, 10:05 AM
Hi Clinton. This time, because it was dawn, I couldn't align the scope, so I guided using the slower slew setting on the goto. I got a little bit of drift. That's why I mostly took 100 to 200 frames per AVI (about 6 to 12 seconds).
Here are the settings on SharpCap if you are interested:
Frame Rate (fps)=15.00
Colour Space / Compression=Y800
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