Region around 57Cyg, DSLR (Canon)

[Christoph Puetz]

Dear PI Users,

here is another PI processed image.
It shows the region around the star 57cyg between the northamerica- and pelican-nebula.
I had to use an achromatic 125/900mm fraunhofer refractor.
Canon EOS 450d. modified, 800ASA, 26x10 minutes exposure time, no filter.
Image fully processed in PI (like all of mine :-)). In this case I made heavy use of the
DarkStructureEnhance- and CLAHE functions, later some ACDNR Noise reduction.
I did not succeed in supressing the small blue halos around the stars (->telescope lens),
but the details in the h-alpha and dark clouds are quite fine ....

[medium size]
http://www.ccdsky.eu/Astronomy/slides/f-nordamerika_pelikan.html
[flick labeled]
http://www.flickr.com/photos/cpfoto1964/6214557815/in/pool-387956@N23/lightbox/

Any feedback and hints are welcome.
Christoph

[Lex]

Hi,

The image seems to be great, haven't you got a better resolution one?

Cheers

Lex

[astropixel]

Hi Christoph. Nice image. And I appreciate the effort required with a DSLR.

The more I see of dedicated CCD images the less enchanted I become, persisting with a DSLR. There seems little point modifying expensive cameras for astro when there are comparative alternatives with the added advantage of cooling.

I am told that the latest KAI 8050 True Sense interline sensors are a vast improvement in OSC as a DSLR replacement. The QSI's with the KAF 8300 are comparatively priced with Canon 5D MKII, as their price drops, replaced by a newer model.

Still we persist.

[Christoph Puetz]

@ "lex": Unfortunately I currently have no other possibilities for a higher resolution.
I am registered in some other galleries, but for the full resolution, there is a upload limit by size   
Flickr can upload images by full size, but they see to downsample them - maybe you know a provider
for full res ?

@Astropixel:
Yeah - time will tell when there will be some cooled ccd cameras affordable  (with acceptable chip size)
Astronomers are patient .... 
Nevertheless - It is also a challenge to compete with all those high end cameras, I saw a lot of nice images
taken with a DSLR.
I will keep an eye to the KAI 8050 ...

[Lex]

Hi,

There is an other provider for this kind of services, i think it is called dropbox or something?

Did you try to save your file as a jpeg in PI, using the compression slider at 40%?
With this your Image could possibly be directly visible in acceptable quality...

Just upload it with the additional options option; euurrr sounds weird

Best

Lex

[Christoph Puetz]

Hi lex,

this is the high res version (with less jpeg quality, 45%) in astrophotogallery.org:

http://www.astrophotogallery.org/member-galleries/p8293-ha-region-around-57cyg.html