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TeleVue 5" refractor Vs. Hubble Telescope


ChrisLX200

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I found this image of the Bubble Nebula in the Hubble Archives so cropped my recent Bubble Neb image to match (roughly) so I could compare the two.

mmm OK, I lose LOL! Hardly surprising but all the major features are there. Incredible performance for such a small instrument, and under UK skies too.

Well I though it was interesting....

ngc7635HubbleBubble_zpsc9eeae83.jpg

ChrisH

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I much prefer your colour choices!

And honestly... spikes....?

LOL, I know - and the nasty red halos round the stars? Should do better...  :)

ChrisH

PS., I should have said my image had to be scaled 500% to match...

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Very true, but when I was processing this image I wondered if the details I was trying to tease out were real or artifacts, at my small image scale it's difficult to tell. Nice to see they are mostly genuine objects.

ChrisH

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Hi Chris,

Considering that you have over 400 KM of the atmosphere( or even more )  to contend with, i really do not see a great deal of difference to be concerned with. The HST image looks sharper for sure but to  my eyes it does not have more detail than your capture.

Regards,

A.G

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The comparison was a bit tongue-in-cheek of course :)    However, I'd processed my data using deconvolution routines so needed to know if I'd recovered real detail or generated rubbish from spurious noise. It's very easy to get deconvolution wrong, so finding a Hubble Space Telescope image answered that question.

ChrisH

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I think we need to send a mission of 5 astronomers to your place and replace the kettle and coffee machine see if that makes a difference !

I would be knocking on the door of NASA asking where they spent all those dollars if that's the best they can do .

joking aside you have proved that the amateur astronomer can achieve real results while earthbound with the atmosphere and real world budgets , AWSOME .

nice image too!

Andy

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I think that's a remarkable result. What s/w are you using to perform the deconvolution?

I use the one in StarTools, this was set @ 2.1 pxl radius and 12 iterations.

There is also the 'Flux' module in StarTools which offers a bit more control over the deconvolution process.

ChrisH

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It is always a good idea to test your data against other data on the same target. From time to time you discover that you shouldn't have used the clone stamp after all!!!  :grin:

But, sadly, nobody on here can do the Hubble Deep Field. http://www.google.fr/imgres?imgurl=http%3A%2F%2Fwww.nasa.gov%2Fimages%2Fcontent%2F690951main_hs-2009-31-a-xlarge_web.jpg&imgrefurl=http%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Fhubble%2Fscience%2Fxdf.html&h=1113&w=1280&tbnid=SUXcobX78-HS_M%3A&zoom=1&docid=5Aoxg6WFo67SoM&ei=cMXKU5jJMMe70QXMuoH4Cg&tbm=isch&iact=rc&uact=3&dur=440&page=1&start=0&ndsp=29&ved=0CCYQrQMwAA

The best we could hope for here would be about ten black pixels!! :grin:

Olly

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There are times when I thiink ameteurs should be processing Hubble raw images. If we can get this much out of small scopes what could folk get out of big uns?!!

BTW Nice images

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On Mars and Jupiter, I was pleasantly surprised by a comparison of my MAK150 

with (added stacked) Video images, with a C11 Edge HD plus "proper" planetary

camera. But Hey, a C11 would be my idea of a "Hubble" telescope. :p

I am coming to believe that, with "reasonable" optical capabilities, *seeing* has a lot

to do with it. Or my omni-preset THIN high cloud?  :angryfire: But nil desperandum, maybe...

Factoring in aperture, focal length, pixel size, I still think I can do even better.  :evil6:

Well, you gotta believe (or blame) something in this hobby ain'tcha? :angel12:

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