Observations>Telescope Objects>Craters ~4 Days Old

Furnerius: Out on the (SE) Limb


A battered, old impact crater located near the SE limb.

Observer Comments

Target DescriptionFurnerius is a large impact crater located near the moon's SE limb. Orbital imagery shows a nearly round crater, but our view of it is substantially foreshortened, making it appear longer parallel to limb.
Image Capture DescriptionThis capture took place on the same evening as the conjunction of the crescent moon with the Pleiades (M45). So this image was taken "between" stacking of this cluster as part of one of the optional exercises in this program. The good news is that I had time to use the real-time lucky imaging and wavelet sharpening built into SharpCap. The bad news is that I could only use the Askar V configured with reducer to 384mm focal length, in order to be able to image all of M45 and the moon in the same frame.

All that said, it is a useful image and substantially better than the Seestar would have delivered.
Program Links
 Lunar Program Listings 

Capture Details

Date and Time Observed2025-04-01 22:00:00
Phase Age3.8 days
Lunar PhaseWaxing Crescent
Illumination17%
ConditionsTransparency: Good. Seeing: Good.
Obs. Lat/Long42° 17', 073° 57'
Capture SoftwareSharpCap
Capture TypeReal-time lucky imaging with wavelet sharpening
InstrumentAskar V 80mm w reducer f4.8-384mm FL
CameraASI2600MC-Pro
Capture DetailsApprox 100 images stacked
Post ProcessingLevels adjusted in Affinity Photo