LOG IN    OR   REGISTER TO FORUMS


Shooting the Annular Eclipse

FORUMS Photography Talk by Genre Astronomy & Celestial Talk
Thread started 30 Jan 2012 (Monday) 13:27   
LIST NEARBY THREADS
 
omarsultan
Member
omarsultan's Avatar
Joined Dec 2011
34 posts
California
[MORE/SHARE]

I was intrigued by the article on the coming annular eclipse in the Feb '12 edition of Sky and Telescope since it will be in my neighborhood. So, two newbie questions:

  • Do I simply need a solar filter for my telescope--is there any particular kind of solar filter?
  • Any hints on exposure?


Thanks,

Omar

Post #1, Jan 30, 2012 13:27:21


_______________
Omar Sultan
Canon EOS 7D | EF-S 17-55mm f/2.8 | EF 70-200mm f/4L | EF 100mm f/2.8L | EF 1.4X III TC | Celestron EdgeHD 800

LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)
hollis_f
Cream of the Crop
hollis_f's Avatar
Joined Jul 2007
10,423 posts
Sussex, UK
[MORE/SHARE]

omarsultan wrote in post #13795141external link
I was intrigued by the article on the coming annular eclipse in the Feb '12 edition of Sky and Telescope since it will be in my neighborhood. So, two newbie questions:

Do I simply need a solar filter for my telescope--is there any particular kind of solar filter?
Any hints on exposure?


Thanks,

Omar

You want to make a filter from Baader AstroSolar Film to fit over the front of your 70-200 with the 1.4 attached. There's a guide here. Make sure the filter cannot be knocked from the lens by accident - use a lot of tape. Do not be tempted to use mylar, welding glass or ND filters. There's a good chance that they'll block the visible light but pass the IR. If you're lucky it'll just fry your sensor, if you're unlucky it'll fry your retina.

You really want a longer lens than the 70-200, even with a 1.4x. To fill the frame you'd need something like 1500mm on an APS-C, so 280mm will make for a small image.

For exposure - try it on the sun before the eclipse. About 1/400s; f8; ISO200 will be a good starting point.

Post #2, Jan 31, 2012 07:00:01


Frank Hollis - Retired mass spectroscopist
Give a man a fish and he'll eat for a day. Teach a man to fish and he'll complain about the withdrawal of his free fish entitlement.
Gear Websiteexternal link

LOG IN TO REPLY
omarsultan
THREAD ­ STARTER
Member
omarsultan's Avatar
Joined Dec 2011
34 posts
California
[MORE/SHARE]

Thanks! ( Again :) )

Post #3, Jan 31, 2012 18:35:21 as a reply to hollis_f's post 11 hours earlier.


_______________
Omar Sultan
Canon EOS 7D | EF-S 17-55mm f/2.8 | EF 70-200mm f/4L | EF 100mm f/2.8L | EF 1.4X III TC | Celestron EdgeHD 800

LOG IN TO REPLY


LIST NEARBY THREADS
1,232 views & 0 likes for this thread
Shooting the Annular Eclipse
FORUMS Photography Talk by Genre Astronomy & Celestial Talk



NOT A MEMBER YET? CLICK HERE TO REGISTER TO FORUMS

CHANGE BODY TEXT SIZE FOR ALL THREAD PAGES
POWERED BY AMASS 1.0version 1.0
made in Finland
by Pekka Saarinen
for photography-on-the.net


SEND FEEDBACK TO STAFF  |  JUMP TO FORUM...  |  FORUM RULES


Spent 0.00064 for 4 database queries.
PAGE COMPLETED IN 0.01s
912 guests, 821 members online
Simultaneous users record so far is 3341, that happened on Dec 11, 2014
Latest registered member is gar612

COOKIES DISCLAIMER: By using this site you agree that some cookies will be stored on your browser. For unlogged users we store one session id cookie. For registered members we store (in addition to login session cookie) only cookies that are essential for required functionality, we do not store any personal tracking data in cookies or other browser's data storage methods.