Simeis 57
Constellations: Cygnus
Simeis 57, the Propeller nebula, consists of two Hα emission nebulas (H-II regions) in the constellation of Cygnus. These H-II regions are DWB* 111 and DWB 119. It is thought to be located at a distance of 5’500 Ly from Earth. Link to interactive sky chart.
*: DBW: Dickel, Wendker, Bieritz (A catalogue of optically visible H-II regions in the Cygnus X region). Link to Simbad.
Date:
This image was taken during several nights in September and 2022. It was taken with narrowband filters (Hydrogen-α, Oxygen-III and Sulfure-II).
Telescope & Mount:
Takahashi FSQ-106ED on a Paramount MX+ mount
Imaging:
Camera: ZWO ASI2600MM Pro (bin 1×1)
Data:
Hα: 43x240s
O-III: 30x240s
S-II: 40x240s
Total integration time: 7h 32′
Simeis 57 is just south of W63 (SNR G82.2+5.3).
This image was taken with the Celestron C9.25″ + Hyperstar and the Optolong L-eNhance filter. Total integration time was 13h 8′ and consists of two panes.
Below, a closer view of Simeis 57. This image was taken with my 14″ Newtonian located in Spain.
Data:
Red: 60x60s
Green: 60x60s
Blue: 60x60s
Ha: 141x180s
Oiii: 173X180s
Sii: 158x180s
Total integration time: 26h 36′.
