13 February 2020

M 45 Pleiades -LRGB-


This article is about the star cluster.For other uses of Pleiades or Pléiades, see Pleiades (disambiguation).
 The Pleiades (/ˈpl.ədz, ˈplə-/), also known as the Seven Sisters and Messier 45, are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the star clusters nearest Earth and is the cluster most obvious to the naked eye in the night sky.
The cluster is dominated by hot blue and luminous stars that have formed within the last 100 million years. Reflection nebulae around the brightest stars were once thought to be left over material from the formation of the cluster, but are now considered likely to be an unrelated dust cloud in the interstellar medium through which the stars are currently passing.
Computer simulations have shown that the Pleiades were probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

Telescope : TS 60 ED
Mount : Skywatcher AZ-EQ5 GT
Camera : Atik 460 Exm
Guiding : Off-axis guider with Meade dsi2
Filters : L : 30x240sec bin 1x & RGB : 8x240sec all bin 1x
Programs I have used :Maxim DL, PixInsight, Photoshop CS6
Location: Grammatiko, Attiki

05 February 2020

Flaming Star Nebula (IC 405) in HaRGB


IC 405 (also known as the Flaming Star Nebula, SH 2-229, or Caldwell 31) is an emission and reflection nebula in the constellation Auriga, surrounding the bluish star AE Aurigae. It shines at magnitude +6.0. Its celestial coordinates are RA  05h 16.2m dec +34° 28′. It surrounds the irregular variable star AE Aurigae and is located near the emission nebula IC 410, the open clusters M38 and M36, and the K-class star Iota Aurigae. The nebula measures approximately 37.0' x 19.0', and lies about 1,500 light-years away from Earth. It is believed that the proper motion of the central star can be traced back to the Orion's Belt area. The nebula is about 5 light-years across.
Telescope : TS 65Q apo
Mount : Skywatcher AZ-EQ5 GT
Camera : Atik 460 Exm
Guiding : Off-axis guider with QHY 5IIL
Filters : Astrodon Ha 5nm 12 x 900sec bin1x
RGB 12 x 300sec all bin1x
Programs I have used : Sequence Generator Pro,Maxim DL, PixInsight, Photoshop CS6
Total exposure : 360 minutes or 6 hours
Location: Grammatiko, Attiki