Skip to content

Search for:

The ramblings of a teacher – astronomer.

Astrophotos
How-To
Models: Ships, Planes, Trains
Sky Calendar
W1JAB: Radio
Spectroscopy
About/Contact

20181207_46pwirtanen_stack_b1

Published by John A. Blackwell

Director of Phillips Exeter Academy Grainger Observatory, research astronomer, astronomy & education consultant. View all posts by John A. Blackwell

December 8, 2018

Post navigation

20181207_46pwirtanen_stack_b1

Comments are closed.

Tags

0.7m 46P/Wirtanen aberration aphelion Astronomy astrophotography Betelgeuse buying C/2020 F3 camera CCD chroma chromatic aberration comet Conjunction D-810a D810a eclipse eclipse 2017 Film filters Flat Fields FLIR geminid Geminid meteor shower HDR heliochronomer HO holidays how to Imaging infrared iOptron IR Jupiter JWST lens leonids LISA LRGB lunar eclipse machholz meteor meteors meteor shower Moon Märklin NEOWISE Nikon observatory observing Orion Orionids perihelion Perseid Meteors Perseids Phillips Exeter Academy PixInsight polar alignment purchasing Resources SALT Saturn Seek Thermal Shelyak shower solar astronomy solar eclipse south africa Space Telescope spectrograph spectroscopy sun switches Takahashi Taurus telescopes total lunar eclipse train Venus Wirtanen

Follow me on Twitter

John A. Blackwell

John A. Blackwell

Follow @unukalhai

About & Copyright Notice

Regulus and Regulus Astronomy Education site contents are Copyright © 1997-2023 John A. Blackwell. More information on the About/Contact Page.

Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.
To find out more, including how to control cookies, see here: Cookie Policy

John A. Blackwell, B.S., M.S., F.R.A.S.

John A. Blackwell, B.S., M.S., F.R.A.S.