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Astrophotography by Bob Franke

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M45 The Pleiades / Moon Occulation

Click the image for a 7.0 arcsec/pixel display (1875 x 1250)




Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.)  Captured at 3.5 arcsec/pixel.  Shown resampled to 17.5 arcsec/pixel.


Paramount ME


SBIG STL-11000 w/ internal filter wheel, AstroDon Filters

Acquisition Data

12/21/2008 to 2/3/2009  Chino Valley, AZ


Lum     200 min (40 x 5 min, bin 1x1)

Red       60 min (12 x 5 min, bin 1x1)

Green    60 min (12 x 5 min, bin 1x1)

Blue      60 min (12 x 5 min, bin 1x1)


Exposure Details for the Moon:
The Takahashi FSQ-106ED was stopped down to F7 and a single 0.03 sec. exposure was taken with a 6nm Ha filter.


CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, and Noel Carboni's actions.

CCDStack to register, normalize, data reject, combine and luminance sharpen & DDP.

PhotoShop for the color combine.


North is to the top.

This is a composite image of the Moon passing through Pleiades on 02/04/2009 at 02:37:56 UT, as seen from Chino Valley, AZ. The Moon was actually imaged at this time, and then added to an M45 image that I have been working on.

The ecliptic path passes very close to The Pleiades (M45), making Moon occulations a fairly common event. Because the Moon is so bright, it is not possible to image the moon and M45 simultaneously and show the nebula. If I try a shot like this again, I will stop the scope down to about F20. Then I should be able to image the moon with RGB filters and get come color and maybe show the Earthshine on the dark side.