Go Back   IceInSpace > Images > Solar System
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 12-07-2006, 08:40 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
IIS/STS attempt - best to keep this one quiet

It was never goint to be easy, forecast of -3 over night, IIS / STS coming out of the earths shadow at aprox 5:42am at say 65 degrees and then heading further east. It was already going to be small.

10pm:
Anyway, got the toucam in at prime focus ie f5 (208x), set exposure on canopus roughly the same magnitude, 1/500th and 10 fps. Align the guide scope and toucam, kept the peltiers going over night and go to bed.

5:30am, -4 degrees ambient, mirror -3.5 degrees, ice can be seen 80% of the way down the inside of the tube, but mirror is clear of any ice or condensation.

Seeing still horrible at 1/10

Anyway, 1 minute later than starry night predicted, there it is and boy is it moving fast. Already had an avi of running, so start hand guiding whilst looking thru guide scope.

The end result 8 frames out of 1800 that have something.

By the time, something had registered, it wsa getting very low on the horizon.

Anyway, it was very exciting, I am very pleased with the cooling system and telescope in very cold conditions.

Here is the best frame, cropped, converted to greyscale and deconvoluted in Astra image.

Please contain giggling til you are off the forum out of respect for mike and the mods
Attached Thumbnails
Click for full-size image (Untitled-2.jpg)
127.1 KB92 views
Reply With Quote
  #2  
Old 12-07-2006, 08:46 AM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
Good onya Dave At least you now have your first ISS shot for the collection. And look how much you've learnt; if it's 1/10 stick to binoculars

Congrat anyway
Reply With Quote
  #3  
Old 12-07-2006, 08:50 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
thanks paul
Reply With Quote
  #4  
Old 12-07-2006, 08:57 AM
ving's Avatar
ving (David)
~Dust bunny breeder~

ving is offline
 
Join Date: Nov 2004
Location: The town of campbells
Posts: 12,359
good one dave

really, well done
Reply With Quote
  #5  
Old 12-07-2006, 08:57 AM
iceman's Avatar
iceman (Mike)
Sir Post a Lot!

iceman is offline
 
Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
Awesome mate, well done!
Reply With Quote
  #6  
Old 12-07-2006, 09:06 AM
matt's Avatar
matt
6000 post club member

matt is offline
 
Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
There's nothing shabby about that Davo.

Would not have been an easy capture.

Well done!
Reply With Quote
  #7  
Old 12-07-2006, 09:08 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
thanks guys, i dare not show wes higgins' great capture

http://www.cloudynights.com/ubbthrea.../1#Post1039184
Reply With Quote
  #8  
Old 12-07-2006, 09:44 AM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
great showing, we saw it on the horizon up here in newcastle to the east. was dim too, tomorrow morning is -.8 for us directly overhead
Reply With Quote
  #9  
Old 12-07-2006, 09:59 AM
RB's Avatar
RB (Andrew)
Moderator

RB is offline
 
Join Date: Aug 2005
Posts: 26,635
That's awesome David.

You've done very well on a most difficult object.

Reply With Quote
  #10  
Old 12-07-2006, 10:05 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
i tell you, i know i am addicted to this hobby as I was previewing what was going to happen in starry night last night and was getting excited even then!
Reply With Quote
  #11  
Old 12-07-2006, 10:52 AM
asimov's Avatar
asimov (John)
Planet photographer

asimov is offline
 
Join Date: May 2005
Location: Bundaberg
Posts: 8,819
Way to goooo...Davoooo!!!!

That deserves a strut, wooo-hooo!
Reply With Quote
  #12  
Old 12-07-2006, 11:00 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
nude of course
Reply With Quote
  #13  
Old 12-07-2006, 11:04 AM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
dave out of curiousity, what magnification did you have. I am planning to use the pentax with the 50 to 500 lens on the tripod iso 1600 or 800, fstop as low as I can go, might try the Canon on time exposure for 1 or two minutes
Reply With Quote
  #14  
Old 12-07-2006, 11:09 AM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
the toucam at prime focus in my 10" f5 gives me 208x

there are a few cloudy night threads that i based it on one from Wes Higgins and Elias

http://www.cloudynights.com/ubbthrea.../o/all/fpart/1

http://www.cloudynights.com/ubbthrea.../o/all/fpart/1
Reply With Quote
  #15  
Old 12-07-2006, 11:17 AM
gbeal
Registered User

gbeal is offline
 
Join Date: Oct 2004
Location: New Zealand
Posts: 4,346
Good attempt Davo, at least you gave it a go. I read somewhere that the LX200 system can handle the mathematics required to track it, as per Houghy's post. To hand/eyeball it like you did and get anything is a great acheivement.
Reply With Quote
  #16  
Old 12-07-2006, 11:20 AM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
thanks Dave, now in camrea speak I will have to just test, you guys were toucamming
Reply With Quote
  #17  
Old 12-07-2006, 12:20 PM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
Quote:
Originally Posted by davidpretorius
the toucam at prime focus in my 10" f5 gives me 208x

there are a few cloudy night threads that i based it on one from Wes Higgins and Elias

http://www.cloudynights.com/ubbthrea.../o/all/fpart/1

http://www.cloudynights.com/ubbthrea.../o/all/fpart/1
ok so with a 1.5 time magnification parameter for the pentax at 500mm should give me 750 times magnification. Well I might step it back a bitand try somewhere between 300 and 500 and try my luck
Reply With Quote
  #18  
Old 12-07-2006, 12:37 PM
davidpretorius's Avatar
davidpretorius
lots of eyes on you!

davidpretorius is offline
 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
http://www.cloudynights.com/ubbthrea...33656-iss2.JPG
shows how it changes with size.

mine was captured when it really out to sea so to speak.

it really was moving very fast throught the guide scope.

if you can get 300x or even a bit more when it is right overhead, then it will be fantastic.

weather gods......all jetstream and clouds to be redirected to tasmania for the next few days thanks!!!! ie KEEP AWAY FROM NSW!
Reply With Quote
  #19  
Old 12-07-2006, 12:42 PM
[1ponders]'s Avatar
[1ponders] (Paul)
Retired, damn no pension

[1ponders] is offline
 
Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
Sorry to disappoint h0ughy, but your 500mm lens on a DSLR won't give you 750X. Try about 15X

Roughly divide your FL (500) by 50 then multiply by 1.5 -1.6 to work out the mag.
Reply With Quote
  #20  
Old 12-07-2006, 01:55 PM
h0ughy's Avatar
h0ughy (David)
Moderator

h0ughy is offline
 
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,428
Quote:
Originally Posted by [1ponders]
Sorry to disappoint h0ughy, but your 500mm lens on a DSLR won't give you 750X. Try about 15X

Roughly divide your FL (500) by 50 then multiply by 1.5 -1.6 to work out the mag.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 09:49 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Astrophotography Prize
Advertisement
Bintel
Advertisement