CTB 1, also known as Abell 85, is the remnant of a supernova in the constellation Cassiopeia, about 10,000 light years from Earth. With a diameter of 98 light years it is one of the larger supernova remnants. CTB 1 shows a ring-shaped structure of expanding gas released by the explosion of a massive star about 10,000 to 20,000 years ago.
The nebula radiates mainly in H-alpha light, indicating ionised hydrogen, and has a faint, filamentary appearance. Inside it there may be remains of the former star, such as a neutron star or pulsar, that continues to influence the gas.
| IMAGE DATA | |
|---|---|
| Object | ICTB1 / Abell 85 |
| Distance | approx. 10,000 light years |
| Date | 01. - 03.11.2024 |
| Exposure | RGB each 68x120 sec., 31x120sec. Luminance, HA 60x 300sec., OIII 90x 300sec. & SII 61x 300sec. - Total approx. 25h |
| Mount | Skywatcher EQ6-R Pro |
| Telescope | Skywatcher 200PDS |
| Camera | ZWO ASI 2600mm with ZWO LRGB & Ha, OIII & SII Filtern |
| Guiding | Zwo Asi OAG with ZWO Asi 290mm Mini & Asiair |
| Software | AsiAir, Astropixel Processor, Photoshop CC, Topaz Deniose AI, Star X Terminator, Nik Collection 7 |