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Equipment Discussions >> Video and Electronically Assisted Astronomy

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
DSO vid via 12" @ f/2.8
      #6135342 - 10/13/13 04:24 PM

Hi - my latest vid showcases a single evening's DSO images via the 12" SCT @ f/2.8 with a dig @ my challenging LP - hope it's of interest

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jgraham
Postmaster
*****

Reged: 12/02/04

Loc: Miami Valley Astronomical Soci...
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6135467 - 10/13/13 05:39 PM

Wow, neat stuff! Enjoyable as always Nytecam. Thanks for sharing.

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Relativist
Post Laureate
*****

Reged: 10/11/03

Loc: OC, CA, USA
Re: DSO vid via 12" @ f/2.8 new [Re: jgraham]
      #6136201 - 10/14/13 01:42 AM

Very nice, I'm getting convinced more and more that the Lodestar is a good way to go for into all digital video astro.

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Gavin Bray
sage


Reged: 12/31/06

Loc: Australia
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6136296 - 10/14/13 05:29 AM

Hi Maurice

That's a very nice video. I lived in London for a few years so I know how bad the light pollution, as well as the weather, can be.

I'd be very interested in hearing how you make these videos.

Also, with the colour Lodestar, do you find you can take images of star fields that capture the true colours of the stars? From your video, it appears this is the case.

I know with the Mallincam MCHP, I find this difficult to do with stars oversaturated. This is probably not the camera's fault but rather my poor skills.

Regards
Gavin


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bhuvfe
member


Reged: 01/14/11

Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6137062 - 10/14/13 01:43 PM

Very nice video as always...

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Moromete
professor emeritus


Reged: 02/15/12

Loc: Romania
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6137157 - 10/14/13 02:22 PM

It seems you are again in love with LodestarC after discovering the power of F2.8 of an SCT.

If you want to try a Viagra of video astronomy with Lodestarc, try it in 4x4 binned mode at F2.8


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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: DSO vid via 12" @ f/2.8 new [Re: Moromete]
      #6137831 - 10/14/13 08:50 PM

SUPER nice!

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Digital Don
Carpal Tunnel
*****

Reged: 01/20/04

Loc: Manteno, IL
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6137851 - 10/14/13 09:04 PM

Nicely done!

Don


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David PavlichAdministrator
Transmographied
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Reged: 05/18/05

Loc: Mandeville, LA USA
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6137983 - 10/14/13 10:25 PM

I don't come to this section very often. Do any of you guys using the Lodestar broadcast on NSN? I'd be interested to see the results.

David


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: DSO vid via 12" @ f/2.8 new [Re: Gavin Bray]
      #6138385 - 10/15/13 06:49 AM

Thanks everyone for your interest and support
Quote:

Hi Maurice - That's a very nice video. I lived in London for a few years so I know how bad the light pollution, as well as the weather, can be. I'd be very interested in hearing how you make these videos.


Gavin - the video made with preloaded Windows-7 Live MovieMaker - it's very easy to use with fade and zoom options to animate the DSO stills. I've posted >350 clips on my Youtube Nytecam Channel [40% astro] with gross hits approaching 1M
Quote:

Also, with the colour Lodestar, do you find you can take images of star fields that capture the true colours of the stars? From your video, it appears this is the case. I know with the Mallincam MCHP, I find this difficult to do with stars oversaturated. This is probably not the camera's fault but rather my poor skills. Regards Gavin


Whilst colour is easily recorded in nebulae etc for stellar point sources it's easily saturated to white with harsh processing or video settings or overexposure.

Star colour accuracy is another matter! Whilst colour contrasts are commonly reported visually these are often illusionary as star colour directly relates to their temperature from 'cool' bluish to 'warm' orange through intermediate white - note the colours and temperatures are the reverse of the above layman's concept!

For max camera speed I don't use an IR block filter as it kills ~1/3rd camera sensitivity but the resultant IR radiation skews reddish stars to a bluish hue Bearing in mind that due to their extreme faintness, most DSOs would have little or no colour even if we lived right to them so a little skewing of colour in our pics is a fair price to pay


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dragonslayer1
scholastic sledgehammer


Reged: 02/25/12

Loc: SLC, UT
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6138808 - 10/15/13 11:12 AM

what one focal reducer are you using to get to f/2.8? is that the only thing your using to reduce it? Also really good videos, even the video of London city was so clear with a lot of clarity, very good work,
Kasey


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Aquarist
scholastic sledgehammer


Reged: 08/27/12

Loc: Illinois
Re: DSO vid via 12" @ f/2.8 new [Re: dragonslayer1]
      #6139400 - 10/15/13 04:24 PM

Excellent video! Makes me want to pursue the subject further.

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Gavin Bray
sage


Reged: 12/31/06

Loc: Australia
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6139534 - 10/15/13 06:03 PM

Thanks Maurice for the additional information. Those are impressive YouTube stats!

Regards
Gavin


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: DSO vid via 12" @ f/2.8 new [Re: dragonslayer1]
      #6140309 - 10/16/13 05:41 AM

Quote:

what one focal reducer are you using to get to f/2.8? is that the only thing your using to reduce it? Also really good videos, even the video of London city was so clear with a lot of clarity, very good work,
Kasey


Hi Kasey - without the 10mm extension tube [shown in vid] before the Meade f/3.3 FR [no other FRs used!] my setup runs at f/3.6; with the 10mm tube @ f/2.8 and with 20mm tube f/1.8 - both the latter show vignetting of the image field [dark corners] but at f/1.8 it's too severe to be acceptable.

I need to use a 'flat' to correct the vignetting at f/2.8 and it copes fairly well as you see from the results in the vid


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dragonslayer1
scholastic sledgehammer


Reged: 02/25/12

Loc: SLC, UT
Re: DSO vid via 12" @ f/2.8 new [Re: nytecam]
      #6140537 - 10/16/13 09:52 AM

Thank you Maurice, and again very nice video,
Kasey


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