Log in

View Full Version here: : ISS transit over Brisbane (27 frames) 6:40pm Wed 6th November


Dennis
06-11-2013, 09:45 PM
After a failed attempt this morning at 3:46am due to cloud cover, I received a notification that the ISS was to make another transit over Brisbane at 6:40pm Wed 6th November.:)

Having had the failed run earlier in the morning, I was better prepared although thin clouds still marred the views.:(

Here is a composite of 27 frames taken as follows:

Canon 7D fitted with 400mm F5.6L with Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter and Canon Extender x2 EF II giving an effective Focal Length of 1120mm at F16.

To minimise the effects of image blurring due to wild, unconstrained leaps of the camera/lens combo, I guessed an exposure of 1/000 sec at ISO1600 which was probably 2 or 3 stops under exposed once the results came in.

I’ve also included an image of the Moon taken with the same system, but at 1/160 sec although this has been down sampled, so the scale of the ISS and the Moon is greatly different.

Cheers

Dennis

Derek Klepp
06-11-2013, 09:55 PM
Interesting Dennis i use the same combo on my 60D at times .Never thought to try for the ISS though. I use the combo for Sunrise/set distortions but find with just the 2x is a bit easier as less tracking.

Quark
06-11-2013, 10:04 PM
Strewth Dennis, an invasion force of ISS's, top stuff.

Cheers
Trevor

malau
06-11-2013, 10:24 PM
I tried in last few night but failed. I couldnt get it focus correctly. May I know how did you focus ?

I have 600D with f/5 telescope

Thanks

Dennis
07-11-2013, 07:12 AM
Thanks Derek and Trevor, I appreciate your comments.:)

It was nice to have a relatively large FOV :) but it was a pity that we had patchy cloud cover :(.

Cheers

Dennis

Dennis
07-11-2013, 07:14 AM
Hi David

I used Live View on the rear LCD, zoomed in to x5 and manually focused on the Moon before the ISS appeared.

Cheers

Dennis

iceman
07-11-2013, 07:55 AM
Nice work D. More FL needed! :)

malau
07-11-2013, 08:38 AM
Hi Dennis,

Thanks for the tip. I am just a beginner of astrophotography and I used Venus to focus few days ago :lol:

I will give it another shot tonight.

It moved too fast

Dennis
07-11-2013, 09:21 AM
LOL! I was thinking of down shifting to a wide angle lens, to ease the tracking work load and reduce the strain!

Cheers

Dennis

jjjnettie
07-11-2013, 04:34 PM
:) :) Cracking shots Dennis. :)

von Tom
07-11-2013, 07:33 PM
Excellent work Dennis - Especially given that cloud :)

Tom

Dennis
09-11-2013, 07:57 AM
Thanks for the comments Jeanette and Tom, I appreciate them.:)

I have included a composite image cropped at full resolution which shows the relative size of the ISS compared to the crescent Moon.

The ISS “Fleet” reminds me of a swarm of fighters of the Starfleet Starfighter Corps belonging to the United Federation of Planets Starfleet Operational Forces.:lol:

Cheers

Dennis

astronobob
09-11-2013, 01:33 PM
Nice going Dennis :thumbsup: wow, moon invasion, must be an Oasis there ;) Great to have a go and get results like this, well done :thumbsup:
I was half ready for it too, but cloud was very much a problem for the scope :rolleyes: