Search found 232 matches
- Sat Nov 01, 2003 9:11 pm
- Forum: Equipment Discussions
- Topic: newtonians.....
- Replies: 22
- Views: 11918
focal ratio would be calculated by dividing the focal length by it's aperture for example , the aperture of ur scope is 127mm and it's focal length is 1500mm. therefore, the focal ratio would be 11.8. by adding a barlow, it would double the magnification of ur eyepiece.... i don't think it will affe...
- Sat Nov 01, 2003 6:59 pm
- Forum: Coffee corner
- Topic: SP Astronomers
- Replies: 37
- Views: 18318
- Sat Nov 01, 2003 7:49 am
- Forum: Astronomy Events & Observation Sessions
- Topic: any nice viewing area in the western area???
- Replies: 14
- Views: 9965
- Fri Oct 31, 2003 10:23 pm
- Forum: Astrophotography
- Topic: Image of the Sun taken on 31 October 2003
- Replies: 4
- Views: 3843
- Thu Oct 30, 2003 6:54 am
- Forum: Singastro.org Announcements & News
- Topic: Leonid Meteor Shower
- Replies: 12
- Views: 8966
- Tue Oct 28, 2003 5:43 pm
- Forum: Astronomy Events & Observation Sessions
- Topic: Clear Skies Finally!
- Replies: 37
- Views: 19076
- Tue Oct 28, 2003 6:42 am
- Forum: Astronomy Events & Observation Sessions
- Topic: Clear Skies Finally!
- Replies: 37
- Views: 19076
- Mon Oct 27, 2003 1:05 am
- Forum: Equipment Discussions
- Topic: eyepieces
- Replies: 35
- Views: 19311
- Sun Oct 26, 2003 7:32 pm
- Forum: Equipment Discussions
- Topic: eyepieces
- Replies: 35
- Views: 19311
from my own experience, the televue 32mm plossl and the 25mm SMA gives us different views. A few months back, while i was at dempsey, chee chien was kind enough to lend me the 32mm plossl and image showed has a relatively large difference. the 32mm tv plossl gives an image with a darker background, ...
- Sat Oct 25, 2003 9:08 am
- Forum: Singastro.org Announcements & News
- Topic: ALERT: Solar storm heading our way =(
- Replies: 2
- Views: 3066
ALERT: Solar storm heading our way =(
http://news.bbc.co.uk/1/hi/sci/tech/3210901.stm One big sunspot and another on the way Imminent disruption is predicted for satellites, power systems and even mobile phones because of a solar storm. It comes from one of the largest groups of sunspots seen for years. Several times in recent days supe...