I am curious... – Space/Science – HabitableZone

Space/Science

Recent posts

Recent posts

Fewer Transient Alerts coming BuckGalaxy November 2, 2026 5:48 pm (Space/Science)
This report from Congress came out last week... podrock November 1, 2026 11:22 pm (Current Events)
Happy Halloween podrock October 31, 2026 3:03 am (Off Topic)
Expect one hell of a recession/depression in 2027 Arrell October 31, 2026 1:16 am (Current Events)
Next week will get ugly.... Arrell October 30, 2026 2:02 pm (Current Events)
Sir Patrick Stewart. podrock October 30, 2026 11:52 am (Off Topic)
Bernie Taupin. A great interview podrock October 30, 2026 3:05 am (Off Topic)
A new Dwarf Planet? Arrell October 30, 2026 12:49 am (Space/Science)
John Wheeler's philosophy: "Beyond the Black Hole" RL October 17, 2025 5:00 am (Space/Science)
"Engage!" BuckGalaxy October 29, 2026 10:58 pm (Off Topic)

On this day in Space/Science

1 year ago (that week) New Glenn set for its second launch on November 9 7 replies · Nov 5, 2025
5 years ago (that week) ZEISS Mineralogic 3D 1 reply · Nov 3, 2021
10 years ago (that week) CO2 to ethanol 0 replies · Nov 1, 2016

Log in
Register

Space/Science » in reply to Iridium 57

I am curious...

R.L. — 9/19/2005 9:05:33 PM (archived)

How do amateur astronomers estimate magnitude?
I have always wondered about that....

Log in or register to post.

The whole thread (5 posts)

Iridium 57 - Raoul - 9/19/2005 7:21:25 PM
- I am curious... - R.L. - 9/19/2005 9:05:33 PM
  - re: Magnitudes - Raoul - 9/19/2005 9:45:35 PM
    - Magnitudes - Tom Brosz - 9/19/2005 10:33:40 PM
      - The way observatories do it... - R.L. - 9/20/2005 8:40:51 AM

HabitableZone — be civil, or at least entertaining.