Ngc55

[sjastro]

An image I took last year which came out reasonably well. What looks like noise is the image is in fact stellar resolution.

http://users.westconnect.com.au/~sjastro/ngc55c.html

It's a BRC-250/ST-10XME combination 90mL, 20m RGB (each) RGB Binned 2 X 2.

Comments welcome

Steven
http://users.westconnect.com.au/~sjastro/small

[iceman]

Wow, incredible resolution Steven.

Nice little flaring satellite, or meteor, too.

[RB]

Lovely work Steven.

How do you find the BRC-250?
What mount do you have it on?

[EzyStyles]

very nice shot steven alot of details, is this object still imagable or was that an old image?

[glenc]

Very nice, lots of detail and lots of background galaxies too.

[Ric]

Lovely shot Steven, great colour and detail in this image.

A very impressive image.

[sjastro]

Thanks for all the kind comments.


Andrew,

The BRC-250 is a very frustrating piece of equipment for first time users. The correct optical backfocus is very important for image quality. Unfortunately Takahashi don't provide the spacers. It's up to you to get the spacers custom made depending on the type of camera you are using. There is a company in the States that specifically make these spacers to order.
The scope uses a helical focuser. If focus is way out you might have to rotate the focuser over 100 times by hand as the pitch is very small. Because of the focuser, it is virtually impossble to use the BRC-250 for visual use unless you are prepared to invest in a secondary focuser.
Once focus is established the optical quality is superb.
I use the Anssen Technologies Alhena GEM.

Steven


Eric,

The image was taken in October. I would say it is too late for imaging now.
(NGC 55 is not too far from NGC253.)

Steven

[tornado33]

Its going well when one can get individual supergiant stars and star clusters resolved in another galaxy like that. Good thing with helical focusers is they can carry lots of weight with no flexure or slippage
Scott

[Tamtarn]

That's a super image Steven. Such detail and so smooth overall. It was sure worth the wait :thumbsup:

[RB]

Thank you for the info Steven, much appreciated.

Andrew
:)

[sjastro]

Thanks. I note you are from Launching Place. Very nice part of Victoria. Have you ever done imaging or viewing from Mt Donna Buang?

Steven

[dcalleja]

Nice image - great definition in the lanes

[sjastro]

Thanks Dan.

Clear skies

Steven

[jase]

Nice work Steven. Would have thought the combine function would have removed the satellite streak. Look forward to seeing more.

[sjastro]

Thanks Jase.

I average combine images most of the time. If the outlier is very bright and a limited number of images are combined, the outlier is still visible in the combined image.

I have never been keen to median combine as it producers a much lower S/N ratio.

Regards

Steven