Saturday, April 30, 2016

The Moon: Canon T3i vs. QHY-5L-II-M

I took series of videos of the moon using my Orion ED80 f/7.5 refractor on 4/20/16.  I first took the videos with the Canon T3i controlled with Backyard EOS and then switched to the QHY-5L-II-M Planetary Imager in an effort to see which gave better results.  I processed the images roughly the same through Registax and Photoshop.  The results are as follows:

Canon T3i Images: 

Image 1-Prime Focus 2-in (1/2500s, 400-ISO, 1000 frames)

Image 2 - Prime Focus 2-in BYE 5x (1/2500s, 400-ISO, 1000 frames)
Crator: Plato - center top
Maria; Sea of Rains - center

Image 3 - Prime Focus 1.25-in 3x Barlow (1/640s, 400-ISO, 1000 frames)
Crator: Tycho - center bottom with striations radiating outward

Image 4 - Prime Focus 1.25-in 3x Barlow BYE 5x (1/800s, 400-ISO, 1000 frames)
Crator: Plato - center left

QHY-5L_II_M Images:

Image 1 - Prime Focus 1.25-in (500 frames)
Crators: Copernicus - center, Plato - center right, Grimaldi - top left

Image 2 - Prime Focus 1.25-in 3x Barlow (500 frames)

Image 3 - Prime Focus 1.25-in 3x Barlow (500 frames)

Image 4 - Prime Focus 1.25-in 3x Barlow (500 frames)
Crator: Plato - center 

Both cameras did well and they are close.  However, I think the QHY-5L-II-M gave slightly better results especially with the closeup views.  None of these images were cropped, only the brightness, contrast, exposure was adjusted in Photoshop. The QHY-5L-II-M Image 4 showing the crater Plato was rotated so it matched T3i Image 3.

Image 5 - Prime Focus 1.25-in (1000 frames)
Image 5 was taken on April 16, the night of the ISS Transit through the Orion 80 mm Short Tube refractor.  I had this recording but it shut off right before the transit occurred. Fortunately I got with the Canon T3i mounted on the Orion ED80.  For a comparison of ED80 vs. the ST80 look at Image 1.


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