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Equipment Discussions >> Video and Electronically Assisted Astronomy

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Chris A
scholastic sledgehammer


Reged: 02/03/07

Loc: Toronto, Canada
Re: Astro Video Image Gallery new [Re: HowardK]
      #5222219 - 05/14/12 03:58 PM Attachment (46 downloads)

Howard here is the single none processed image of M27 using my MCX-STD Class 0. AGC was the same at 4 and exposure was also the same in fact all of the settings, setup and conditions were the exact same. You can see more amp glow and noise.

Chris A

Edited by Chris A (05/14/12 04:01 PM)


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HowardK
Pooh-Bah
*****

Reged: 10/20/10

Re: Astro Video Image Gallery new [Re: Chris A]
      #5223109 - 05/15/12 06:45 AM

Thanku Chris

Def more amp glow with X1.....although still with agc 4 and 90sec int this is very bearable...

I presume you had the fans running on the disipator for both cameras?


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Chris A
scholastic sledgehammer


Reged: 02/03/07

Loc: Toronto, Canada
Re: Astro Video Image Gallery new [Re: HowardK]
      #5223638 - 05/15/12 02:21 PM Attachment (37 downloads)

Yes to your question Howard. I always try to compare my tests on equal terms as much as possible. Here is last nights M27 screen capture using ccd mode with the X2 camera unprocessed.

Chris A


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Mike Harvey
Pooh-Bah


Reged: 03/01/04

Loc: Orlando, FL.
Re: Astro Video Image Gallery new [Re: Chris A]
      #5226265 - 05/17/12 03:45 AM Attachment (53 downloads)

Here's the same camera (X2 w/Class 0 chip)...MFR-3 with 20mm spacers...56 sec. iteration...28" f/3.6 Starstructure. No PP...this is actually a hand-held digital camera shot of the monitor screen.

This was a longer-than-normal iteration because I wanted to see if I could bring out the "ears" asnd other faint nebulosity.

Got lucky with near-perfect tracking for this one some months ago.
I'm seeing about a 2X gain in sensitivity with the X2 over the Hyper Plus with little amp glow.


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HowardK
Pooh-Bah
*****

Reged: 10/20/10

Re: Astro Video Image Gallery new [Re: Mike Harvey]
      #5227799 - 05/18/12 05:38 AM

Mike

that is a great camera/scope/sky combination u have there...

do you know where AGC was at for this 56sec int?

Curious as to why u think the X2 has twice the sensitivity over the Hyper Plus.....is your X2 a HAD sensor?

Howard


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Chris A
scholastic sledgehammer


Reged: 02/03/07

Loc: Toronto, Canada
Re: Astro Video Image Gallery new [Re: HowardK]
      #5228215 - 05/18/12 11:48 AM

Howard there is NO way that this is an EXView HAD ccd sensor with no amp glow just physically impossible unless Mike has figured out a way to subtract an exact matching dark frame on the fly. I have tested four different cameras for Rock and 3 out of 4 had the EXView HAD. All three camera had a lot more about 2 1/2 to 3 times more amp glow than the standard class 0 in my MCX.

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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Astro Video Image Gallery new [Re: Chris A]
      #5228489 - 05/18/12 02:48 PM

Chris,
I eagerly await an image from your new camera with AGC cranked up to the max!


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Mike Harvey
Pooh-Bah


Reged: 03/01/04

Loc: Orlando, FL.
Re: Astro Video Image Gallery new [Re: HowardK]
      #5228502 - 05/18/12 02:59 PM

Quote:

Mike

that is a great camera/scope/sky combination u have there...

do you know where AGC was at for this 56sec int?

Curious as to why u think the X2 has twice the sensitivity over the Hyper Plus.....is your X2 a HAD sensor?

Howard




AGC was about 60% on this one. On shorter iterations I normally run it wide open.
There WAS a bit of amp glow (I didn't say that there was NONE) but I cropped the image. Other than that - no PP. I don't stack...don't even know how.
As for the chip - I don't know the specs or the type. This was a one-off custom prototype from Rock. Whether or not he incorporated this chip into his latest models, I don't know. He did tell me it would be about twice as sensitive and that seems to be spot-on.
I get the same results at :14 sec. that used to take :28.

Mike

Edited by Mike Harvey (05/18/12 03:00 PM)


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Chris A
scholastic sledgehammer


Reged: 02/03/07

Loc: Toronto, Canada
Re: Astro Video Image Gallery new [Re: Mike Harvey]
      #5228522 - 05/18/12 03:16 PM

Okay Mike that makes sense then since nothing was previously mentioned about cropping, I just saw no PP. We are a bunch of very picky people here . BTW extremely nice capture of M27

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Chris A
scholastic sledgehammer


Reged: 02/03/07

Loc: Toronto, Canada
Re: Astro Video Image Gallery new [Re: GlennLeDrew]
      #5228527 - 05/18/12 03:17 PM

Sure Glenn, I will do this for you over the weekend and post it. I have just been working on vignetting and noise issues lately.

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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: Chris A]
      #5241106 - 05/26/12 06:17 PM Attachment (37 downloads)

Here is M57 from last night. 14 seconds, ACG 3. I experimented a bit with filters last night, this was with a Meade broadband Nebular filter...im happy with the result!

Andy


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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: budman1961]
      #5241110 - 05/26/12 06:19 PM Attachment (28 downloads)

And M90, same parameters.

Andy


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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: budman1961]
      #5241112 - 05/26/12 06:20 PM Attachment (28 downloads)

And M3, same parameters

Andy


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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: budman1961]
      #5241117 - 05/26/12 06:22 PM Attachment (33 downloads)

This is M51, 56 seconds, AGC4, no filter.

Andy


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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: budman1961]
      #5241121 - 05/26/12 06:26 PM Attachment (30 downloads)

Lastly, M64, same setup as M51.

Andy


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A. Viegas
scholastic sledgehammer
*****

Reged: 03/05/12

Loc: New York City/ CT
Re: Astro Video Image Gallery new [Re: budman1961]
      #5241142 - 05/26/12 06:49 PM

Andy, were those 56 sec images unguided?

nice!

Did you have filter on the galaxies?

Al


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budman1961
Pooh-Bah
*****

Reged: 02/25/11

Loc: Springfield, MO
Re: Astro Video Image Gallery new [Re: A. Viegas]
      #5241369 - 05/26/12 09:42 PM

I used the BBand Nebular on the first 3, M51 & M64, no filter. With 56 second integration times (or less), no guider was needed. I can guide, I just dont feel the need!

Andy


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Astro Video Image Gallery new [Re: Mike Harvey]
      #5253740 - 06/03/12 06:05 PM

Fabulous image Mike MC images don't usually impress me but that one does - well done
ps: You've >x5 my 12" scope's collecting area if of similar f/ratio


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mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Astro Video Image Gallery new [Re: Mike Harvey]
      #5254787 - 06/04/12 02:23 PM

Quote:

Here's the same camera (X2 w/Class 0 chip)...MFR-3 with 20mm spacers...56 sec. iteration...28" f/3.6 Starstructure. No PP...this is actually a hand-held digital camera shot of the monitor screen.

This was a longer-than-normal iteration because I wanted to see if I could bring out the "ears" asnd other faint nebulosity.

Got lucky with near-perfect tracking for this one some months ago.
I'm seeing about a 2X gain in sensitivity with the X2 over the Hyper Plus with little amp glow.




That looks more like a CCD image than any of the other malincam images I have seen. Was this a computer monitor screen or a crt monitor? That image doesn't show any of the normal low resolution artifacts that are usually seen with the MC cameras. Was this through s-video or SDI?

Was this taken with dark skies? I too am very impressed with this image. What was the approximate final F ratio of this image? F2.8 or lower?

Edited by mpgxsvcd (06/04/12 02:28 PM)


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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Astro Video Image Gallery new [Re: mpgxsvcd]
      #5255018 - 06/04/12 05:15 PM

I'm sure Mike will fill you in on the details ...

The "traditional" Mallincams (MCHP/VSS/Xtreme) don't have an SDI output, only the solar system oriented Signature model does.

The low res artifacts tend to be caused by the analog to digital conversion done by the USB frame grabber. This is one of the reasons that the image on external monitors has tended to be much better than that on a PC's LCD. Mike's image is also starting with a ton of good data, with a 28" scope the signal to noise ratio is very very favorable.


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