Object name

Great Orion Nebula

Photograph

Other designations

M42 (field includes M43 and NGC1977)

Date

2017-01-07

Constellation

Ori

Telescope or lens

SMC Takumar f=300mm @f/4

Coordinates

Camera

Starlight Xpress SXVR-H694

Apparent magnitude

3.7m

Binning

1x1 20170107_Takumar300_(SIIHaOIII)_200m

Surface brightness

Filters

H-alpha, OIII, SII

Dimensions

1.5°x1°

Exposure

SII+Ha+OIII total exposure time 200m (4m+15s subs)

Distance

1500 ly

Details

Synthetic HDR

Lum = Ha, R = 70%Ha+30%SII, G=60%Ha+40%OIII, B=OIII