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DSO vid via 12" @ f/2.8

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#1 nytecam

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Posted 13 October 2013 - 03:24 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 :grin:

#2 jgraham

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Posted 13 October 2013 - 04:39 PM

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

#3 Relativist

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Posted 14 October 2013 - 12:42 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.

#4 Gavin Bray

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Posted 14 October 2013 - 04:29 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. :D

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

#5 bhuvfe

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Posted 14 October 2013 - 12:43 PM

Very nice video as always...

#6 Moromete

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Posted 14 October 2013 - 01:22 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 :grin:

#7 StarStuff1

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Posted 14 October 2013 - 07:50 PM

SUPER nice!

#8 Digital Don

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Posted 14 October 2013 - 08:04 PM

Nicely done!

Don:usa:

#9 David Pavlich

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Posted 14 October 2013 - 09:25 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

#10 nytecam

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Posted 15 October 2013 - 05:49 AM

Thanks everyone for your interest and support :bow:

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. :D 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 ;)

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 :o 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 :grin:

#11 dragonslayer1

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Posted 15 October 2013 - 10:12 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

#12 Aquarist

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Posted 15 October 2013 - 03:24 PM

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

#13 Gavin Bray

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Posted 15 October 2013 - 05:03 PM

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

Regards
Gavin

#14 nytecam

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Posted 16 October 2013 - 04:41 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

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 :grin:

#15 dragonslayer1

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Posted 16 October 2013 - 08:52 AM

Thank you Maurice, and again very nice video,
Kasey






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