Venus in IRs

Venus imaged with a 742nm IR filter rather than my usual 685nm. Camera was a ZWO ASI290MM

 

12 sets of 1 minute captures, best 5% stacked then 12 resultant images stacked.

 

I ran 2 identical sets of acquisitions with both a 685 and 742 filter- the only difference was slightly longer exposure time @ 742nm to compensate for the darker filter. Histogram maintained around 75% for both.

 

In theory there is a little less resolution due to longer wavelength but I couldnt see much difference practically.

 

Modern cameras like the ZWO ASI290MM and ASI224MC are very sensitive right into the deep IR.

 

Astrometry:

 

Illuminated fraction = 0.358

Diameter = 31.8 arcsec

Light travel time = 4.4 minutes

Elevation = 21 degrees

Elongation from Sun = 43.7 East

 

Done