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anthony2302749
30-09-2005, 08:04 PM
Good evening

Just upload my latest attempted at imaging Mars :D (this would be my fifth attempt). It was not a good night and I would rate the seeing to be 4/10. What is good about this image is that the colour balance looks better and there is much more detail present in this image. Things can only get better :) .

http://www.asv.org.au/index.php?option=com_zoom&Itemid=42&page=view&catid=45&PageNo=1&key=3&hit=1

Anthony
Melbourne, Australia

Taken 30/09/05
Lumenera LU075C 15fps
Meade 10” LX200 f10 Classic
5X Powermate effective f/ratio of 50
Sirius Optics NIR1
Aligned, stacked, wavelet & gamma processing in Registax 3
Additional processing with AIP4WinV2 & Photoshop
davidpretorius
30-09-2005, 08:23 PM
great stuff,

what magnification do you get, are you at prime focus without an eyepiece.

I am trying to put together an article for mike on what you can see practically with a tracked scope and untracked scope.

Does mars look that big in your eyepiece with your powermate?

top stuff
anthony2302749
30-09-2005, 08:42 PM
These are all good questions. I am using a 5x Powermate (e.g. Barlow Len) with my scope, therefore I am using negative projection. As for magnification etc I will get back to you.

Anthony
Mick
30-09-2005, 08:48 PM
Great Mars photo Anthony, your photo has an amazing amount of detail.
anthony2302749
30-09-2005, 09:53 PM
Back again, David with a answer to some of your questions.

The magnification of the telescope with the camera mounted directly to it can be determined by dividing the focal length of the telescope by 50. For example, a 1,000mm focal length telescope would yield 20 x magnification compared to a normal 50mm camera lens.

With the setup I used to image Mars the magifiction would be around 250x

e.g. 10" f10 has a focal lenght of 2500mm mulitply that by 5 (5x Powermate) we end up with a focal lenght of 12500mm. Divide this by 50 and we end up with a magnification of 250x.

In terms of image scale we end up with about 0.12 arcsec per pixel.

Anthony
asimov
01-10-2005, 04:43 AM
Nice shot Anthony! BTW your link is a dead-end.
vindictive666
01-10-2005, 07:36 AM
the link works fine for me :)
Exfso
01-10-2005, 02:10 PM
Link fine for me as well.

:thumbsup: