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Equipment Discussions >> Video and Electronically Assisted Astronomy

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mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Astro Video Image Gallery new [Re: mpgxsvcd]
      #5418885 - 09/13/12 10:26 AM Attachment (133 downloads)

The image below is a stacked image. I know we are not supposed to post those here. However, I think the comparison between the single exposure and the stacked image is noteworthy.

The stacked image is from 30 40 second subs and the processing took about 2 hours with my limited experience.

I like the stacked image but I like the instant gratification of the single exposure even more. It is nice to have one camera that can do both though.

Edited by mpgxsvcd (09/13/12 10:41 AM)


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mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Astro Video Image Gallery new [Re: mpgxsvcd]
      #5418890 - 09/13/12 10:29 AM Attachment (127 downloads)

This is one of the 40 Second Single Exposure subs.



Edited by mpgxsvcd (09/13/12 10:30 AM)


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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: Paul Milligan]
      #5454454 - 10/04/12 01:19 AM Attachment (84 downloads)

Spent some time on the 12 inch Dob and used the mini NTech camera to capture M57. This in in my light polluted driveway and no filters of any kind used. This was with no AGC and sense up at 1024.

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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: Paul Milligan]
      #5468956 - 10/13/12 09:20 PM Attachment (77 downloads)

This M57 was taken through my new Celestron C11-XLT with the NTech Video Camera in Color mode. I like this telescope much better than the 12 inch Dob and look forward to many years of use with it.
Collimation was off during this take so the stars appeared smeared. I corrected the collimation after this session.

Edited by John59 (10/13/12 09:25 PM)


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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: Paul Milligan]
      #5468958 - 10/13/12 09:21 PM Attachment (69 downloads)

This M27 was taken through my new Celestron C11-XLT with the NTech Video Camera in B/W mode.
Collimation was off during this take so the stars appeared smeared. I corrected the collimation after this session.

Edited by John59 (10/13/12 09:26 PM)


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mega256
scholastic sledgehammer
*****

Reged: 05/10/07

Loc: N of Tampa
Re: Astro Video Image Gallery new [Re: John59]
      #5482016 - 10/21/12 02:10 PM Attachment (65 downloads)

Thought Id post this...From My C14 at F2 amd MCX-EX...90 seconds as from my NSN show last night..Using both a UHC and IR cut filter,with the moon out from Tampa..
The Bubble Nebula

Edited by mega256 (10/21/12 02:11 PM)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Astro Video Image Gallery new [Re: mega256]
      #5484777 - 10/23/12 04:37 AM Attachment (56 downloads)

Dire month for clear skies but got this M27 Dumbbell in 3x60s last week via SX Lodestar-C on M12 @ f/3.7 This object being fairly routine over last few months but now moving west and less well placed

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Astro Video Image Gallery new [Re: nytecam]
      #5484781 - 10/23/12 04:58 AM Attachment (61 downloads)

Even 20s exp gives acceptable, if noisy, result

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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: nytecam]
      #5486174 - 10/23/12 10:25 PM

Nice captures! My Celestron CGEM-DX arrives tomorrow. Then I will be able to get my new C11 up and going. of course that will be after the traditional week of clouds

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mega256
scholastic sledgehammer
*****

Reged: 05/10/07

Loc: N of Tampa
Re: Astro Video Image Gallery new [Re: John59]
      #5487264 - 10/24/12 04:19 PM Attachment (54 downloads)

From my LP skys N of Tampa...C14@F2 MCX-EX 90 seconds
HH nebula UHC and IR filters.....


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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: mega256]
      #5487314 - 10/24/12 04:48 PM

Nice result mega!

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Astro Video Image Gallery new [Re: mega256]
      #5488040 - 10/25/12 04:09 AM

Very impressive HH in 90s As they say "try eyeballing that one!!!"

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CONQUEST1
member
*****

Reged: 12/28/09

Loc: Peoria, Arizona
Re: Astro Video Image Gallery new [Re: nytecam]
      #5489281 - 10/25/12 09:15 PM Attachment (58 downloads)

First Jupiter. Skies 3. Frame capture/snapshot. Untouched jpeg. Equip specs: Orion 8" SVP, SCB2000 (zoom set at 2.3), 2x barlow'd, IR cut. What f.l. is the Sammy out of the box, no zoom (compared to an eyepiece)?

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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Astro Video Image Gallery new [Re: CONQUEST1]
      #5489415 - 10/25/12 10:46 PM

Quote:

What f.l. is the Sammy out of the box, no zoom (compared to an eyepiece)?



1/3" sensor = approximately the fov of a 6mm 50° eyepiece (like a Plossl)

Really nice Jupiter by the way Jerry.


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CONQUEST1
member
*****

Reged: 12/28/09

Loc: Peoria, Arizona
Re: Astro Video Image Gallery new [Re: mclewis1]
      #5489478 - 10/25/12 11:28 PM

Mark,
Thank you very much. So, with my 203mm aperture and 1000mm focal length, my calculation should be (appx.): 1000/1.4 = 714x? Wow, I don't know if that is possible with my scope. Does that seem right?
---------------------
Jerry


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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Astro Video Image Gallery new [Re: CONQUEST1]
      #5490062 - 10/26/12 11:30 AM

Jerry,

First actual magnification comparisons get a little silly with digital cameras since you can change the final representation at will. Actual magnifications rely on how you reproduce the image that's on the CCD/CMOS sensor.

With your Sammy and a 1000mm scope Jupiter will appear to be the same size when measured against the fov of a 6mm Plossl eyepiece as across the fov of the camera. A 6mm eyepiece in your scope will produce about 167X.

For your Jupiter shot with a 2x Barlow your working at about 2000mm ... so about 333x, then with the digital zoom at 2.3x you'd be at something equivalent to 767x. Yes, this is magnification that likely wouldn't be very useful visually, but remember that you're actually capturing at 333x and only then increasing the magnification of the image within the camera.

The video camera is however running at many frames per second (depends on what exposure settings you used) and so it's "freezing" the seeing. I'll bet looking at all the individual frames in the video stream that the majority of them wouldn't be very good.


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CONQUEST1
member
*****

Reged: 12/28/09

Loc: Peoria, Arizona
Re: Astro Video Image Gallery new [Re: mclewis1]
      #5490096 - 10/26/12 11:56 AM

Mark,
Thanks again, very informative. Yes, the avi. stream is rough. Respectfully, how is it that you come by all your knowledge related to these questions, if I may?
-----------------
Jerry


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Murali
newbie


Reged: 08/14/12

Loc: Chennai, India
Re: Astro Video Image Gallery new [Re: CONQUEST1]
      #5494932 - 10/29/12 04:28 PM Attachment (58 downloads)

My first astro images! Taken from the image on a 9 inch LCD monitor using a mobile phone camera. No post-processing (should be obvious:) except for resizing for submission.

Date: Oct 26, 2012
Location: India
Telescope: ES AR152 F/6.5 Refractor
Mount: Manual Alt-az
Camera: Mallincam Jr. (ALC: OFF, AGC: OFF, SENSE: OFF)


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John59
sage


Reged: 11/06/11

Loc: Round Rock,TX
Re: Astro Video Image Gallery new [Re: John59]
      #5495625 - 10/30/12 12:48 AM Attachment (51 downloads)

Here is M2 captured through a C11 mounted on a CGEM-DX with a near full moon. The NTech video camera was set with AGC low and sense up X64 with a .5 Focal reducer, hence the coma at the edges.

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Craig in Tacoma
super member


Reged: 01/27/11

Re: Astro Video Image Gallery [Re: mpgxsvcd]
      #5517025 - 11/12/12 11:09 PM Attachment (27 downloads)

Nice Image, stacked or otherwise..Here is a shot I took from my first light broadcast of M27.I used my Astro Tech 72mmED with the MC Universe and a 2" extension tube, no filtering, a single 50 second exposure, gain at 18.25, Gama at -15, Contrast at -20, Auto white balance.. Picture cropped to 800x800 aprox

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