International Space Station

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International Space Station
Taken by Ralf Vandebergh on May 22, 2019 @ the Netherlands

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Details:

Animated gif made from frames of the same imaging session as posted before. Taken with fully manually tracked 10 inch F4,8Newtonian reflector (equatorially mounted), tracked at crosshairs at 6x magnification. ALccd 5L-11 mono CMOS camera. For more images & animations see: http://www.ralfvandebergh-astrophotography.simpsite.nl/home

Photographer's website:

http://www.ralfvandebergh-astrophotography.simpsite.nl/home

Comments

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Hi Ralf,
Really very nice details is this animation !
I hope you will tell us soon on your site about your special - low frame number - processing technique !
BR

Posted by sweiller 2019-05-22 10:14:37

When you say equatorially mounted I suppose from my own experience that you align your mount not on Polaris but on culmination data (Az, h) given by Calsky doing Az + 180 & 90-h ... Am I right ?

Posted by sweiller 2019-05-22 10:19:15

Ralf Vandebergh asked me to forward his answer to Sylvain Sweiller, Because he can not log in to this time: Answer: I start with mount aligned to pole to be able track stars to focus on them. Then short before pass I adjust the direction to the west or the east to get as smooth tracking direction. I do this approximately on experience.

Posted by Philip Smith 2019-05-22 17:31:22

Ok !
As I said, to track smoothly the ISS the best mount polarkind direction can be calculated from Calsky data (AZ.c, h.c) at culmination !
Just turn the mount to 180° + Az.c and set height to 90° - h.c.
Doing this, the mount turns exactly around the axis of the ISS trajectory circle !

Posted by sweiller 2019-05-22 21:03:32

nice use of frame summing technique!

Posted by amplelight 2019-05-23 15:24:49

Apollo Lasky - amplelight Are you going to contact me at my email? I want to talk to you about your processing technique is literally the federal government way to improve your data using homeland security image enhancement. This technique was developed to catch criminals faces in blurry video and also read licence plates. As I said my contact email is Lordphilip@optonline.net.

Posted by Philip Smith 2019-05-25 11:16:43

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