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Submitted: Mon, 2023-03-20 11:23

Abell 21

The Medusa Nebula is a planetary nebula in the constellation of Gemini. It is also known as Abell 21 and Sharpless 2-274. It was originally discovered in 1955 by University of California, Los Angeles astronomer George O. Abell, who classified it as an old planetary nebula. Until the early 1970s, the nebula was thought to be a supernova remnant. With the computation of expansion velocities and the thermal character of the radio emission, Soviet astronomers in 1971 concluded that it was most likely a planetary nebula.

SII = 22 * 1800 sec. bin1, Ha = 19 * 1800 sec. bin1, OIII = 17 * 1800 sec. bin1

Total 29 hours.

Pixinsight 1.8. 2017-2023 years.

Abell 21
Submitted: Sat, 2023-03-11 14:39

NGC 1333

NGC 1333 is a reflection nebula located in the northern constellation Perseus, positioned next to the southern constellation border with Taurus and Aries. It was first discovered by German astronomer Eduard Schönfeld in 1855.

L = 60 * 600 sec. bin1, L = 24 * 1800 sec. bin1, RGB = 10 * 900 sec. bin2, Ha = 12 * 1800 sec. bin1, OIII = 10 * 1800 sec. bin1

Total 40,5 hours.

Pixinsight 1.8.

2017 - 2023 years.

NGC 1333
Submitted: Sun, 2020-05-24 22:54

IC 405

IC 405 (also known as the Flaming Star Nebula, SH 2-229, or Caldwell 31) is an emission and reflection nebula[1] in the constellation Auriga, surrounding the bluish star AE Aurigae. It shines at magnitude +6.0. The nebula is shot in narrow-band and processed in the SHO palette.

SII = 15 * 1800 sec. bin1, Ha = 13 * 1800 sec. bin1, OIII = 21 * 1800 sec. bin1

Total 24.5 hours.

Processing - Pixinsight 1.8, the final processing in Photoshop.

November-December 2019, January-March 2020

IC 405