Abell 61 ou PN G077.6+14.7, PK 077-14.1, A 61

 

Image HaOIII-rgb

Situation dans le ciel

Image OIII

Image Ha

Image RGB

Données techniques de prise de vue

Object : Abell 61 ou PN G077.6+14.7, PK 077-14.1, A 61
Common name :
Date : 29 juin au 27 juillet 2020
Optics : Newton OO400 F3,8
Mount : Paramount ME Numéro 1
Location : Orange observatory
Seeing FWHM : 2.19 à 3
Ccd : Moravian G4
filter wheel : Moravian
filters : Astrodon HaOIIIRVB
Focuser :Atlas
Guiding : Atik 314L+
Temp. out : T° de  12.7 à 23 °
Temp ccd : -25°
Resolution …………… 1.221 arcsec/px
Rotation …………….. -7.679 deg
Observation start time … 2020-06-30 02:06:55 UTC
Observation end time ….. 2020-06-30 02:16:55 UTC
Geodetic coordinates ….. 6 19 04 W 46 01 49 N
Focal distance ……….. 1520.17 mm
Pixel size …………… 9.00 um
Field of view ………… 1d 23′ 21.9″ x 1d 23′ 21.9″
Image center …………. RA: 19 18 32.806 Dec: +46 12 36.76
Total exposure 20.5 h
tout en binning 1×1
Ha 50 x 10mn
OIII 28 x 10mn
30R 30V 30B x 5mn

Données techniques

Commentaires sur l’objet photographié

Abell 61 is pretty faint and pretty ancient planetary nebula in Cygnus. It is located somewhere around 4,500 light years away and its age is estimated to 22,000 years. Central star apparent brightness is 17mag, and its surface temperature is over 60,000 K. Apparent diameter of Abell 61 is about 3.3 arc minutes, so it is similar size as famous M97 Owl nebula. But Abell 61 is about 100 times fainter. outters-nicolas