ISF Logo   IS Forum
Forum Index Register Members List Events Mark Forums Read Help

Go Back   International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology
 


Welcome to the International Skeptics Forum, where we discuss skepticism, critical thinking, the paranormal and science in a friendly but lively way. You are currently viewing the forum as a guest, which means you are missing out on discussing matters that are of interest to you. Please consider registering so you can gain full use of the forum features and interact with other Members. Registration is simple, fast and free! Click here to register today.
Tags astronomy , telescopes

Reply
Old 11th June 2019, 09:49 PM   #81
steenkh
Philosopher
 
steenkh's Avatar
 
Join Date: Aug 2002
Location: Denmark
Posts: 5,561
Originally Posted by Trebuchet View Post
I'd guess the "ring" was some moons.
The optics must have been unbelievably out of alignment for four moons to look like a ring.

A slight haze that night might do the trick, but I have never heard about this before.
__________________
Steen

--
Jack of all trades - master of none!
steenkh is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 11th June 2019, 10:08 PM   #82
Cheetah
Graduate Poster
 
Cheetah's Avatar
 
Join Date: Feb 2010
Posts: 1,423
The Moon and Jupiter

I was taking pics of the moon with my SLR and a 70-200mm lens.
200mm is not much, but I got some nice ones.

IMG_6280.jpg

On some overexposed ones I noticed something.

IMG_6247a.jpg

I wouldn't have thought you could get Jupiter and large moons with only a 200mm.
Enlarged and labeled.
IMG_6247b.jpg
__________________
"... when you dig my grave, could you make it shallow so that I can feel the rain" - DMB

Last edited by Cheetah; 11th June 2019 at 10:17 PM.
Cheetah is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Old 12th June 2019, 02:24 AM   #83
steenkh
Philosopher
 
steenkh's Avatar
 
Join Date: Aug 2002
Location: Denmark
Posts: 5,561
Originally Posted by Cheetah View Post
I was taking pics of the moon with my SLR and a 70-200mm lens.
200mm is not much, but I got some nice ones.

Attachment 40285

On some overexposed ones I noticed something.

Attachment 40286

I wouldn't have thought you could get Jupiter and large moons with only a 200mm.
Enlarged and labeled.
Attachment 40287
Very well indeed!
__________________
Steen

--
Jack of all trades - master of none!
steenkh is offline   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Reply With Quote Back to Top
Reply

International Skeptics Forum » General Topics » Science, Mathematics, Medicine, and Technology

Bookmarks

Thread Tools

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 -7. The time now is 10:24 AM.
Powered by vBulletin. Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.

This forum began as part of the James Randi Education Foundation (JREF). However, the forum now exists as
an independent entity with no affiliation with or endorsement by the JREF, including the section in reference to "JREF" topics.

Disclaimer: Messages posted in the Forum are solely the opinion of their authors.