Collinder 405
Collinder 405 (Cr 405), better known as NGC 6823, is an open cluster in the constellation Vulpecula. It lies at a distance of roughly 6,000 light-years. The same open cluster also appears in other catalogues as Her H VII-18, H400 361, OCL 124. The Collinder catalogue of 471 clusters, compiled by Per Collinder in 1931, gathers both famous showpieces and obscure groupings such as this one.
The image on this page was taken at the Pollux Observatory in Zuidlaren on 1 September 2022 with the Takahashi FSQ106 ED and a ZWO ASI 1600mm Pro. Total integration time was 2.6 hours. Data was collected through OIII 6nm, SII 6nm, H-alpha 6nm.
Object Data
Collinder:Cr 405
Also known as:NGC 6823, Her H VII-18, H400 361, OCL 124
Type:Open cluster
Constellation:Vulpecula
Distance:~6,000 light-years
Observation Data
Location:Pollux Observatory, Zuidlaren
Date:1 September 2022
Technical Data
Exposure time:O- 8 x 200 sec
S- 9 x 200 sec
Hα- 30 x 200 sec
Total: 2.6 h
S- 9 x 200 sec
Hα- 30 x 200 sec
Total: 2.6 h
Telescope:Takahashi FSQ106 ED
Camera:ZWO ASI 1600mm Pro
Color palette:SHO (Hubble palette)
Filters:OIII 6nm, SII 6nm, H-alpha 6nm