01  August  2016

 By     Arun Shanker
www.agriculture.frih.net )

The crater Tycho is very prominent and the ray like pattern emerges from this crater and can be distinguished with the unaided eye on full moon days clearly.
 Here is the area of Tyco crater the centre south of the moon in this pic I took with a 6 inch Dobosonian Newtonian reflector with a digital eyepiece,
 I took pic s and videos, extracted frames from videos and stacked about 700 frames to get his image. You can see the Tycho (85 km) little towards the left of centre,
the crater has a spot like protrusion, and it does not show a ray like pattern like seen with the unaided eye. Here, there is a bigger crater Longomotanus (145 km) right below
 Tycho, to the left of it is crater Wilhelm (107 km). A larger crater is seen in the bottom centre Clavius (225 km), it is prominent and there are two craters –
Crater Rutherford and crater Porter which are on the ridge of the crater Calvius on opposite sides. Inside the crater Calvius you can see four craters spiraling down
 decreasing in size, they are Clavius D, C, N, J, and JA. This area of the moon is crater ridden with a lot of craters.
stacked with RegiStax, 6 inch Dobsonian Newtonian reflector - Video taken with digital eyepiece. Photographed with a digital eyepiece Imaging Sensor:
1/4 Inch 1.3 Megapixel CMOS, Pixel Size 2.8μm x 2.8μm, Sensitivity: 1.0 V/Lux-sec, Spectrum response 400nm - 1000nm about 180 frames e
xtracted and stacked. Diameter of Primary Mirror: 153mm, Focal Length: 1200mm, Resolving Power: 0.74, Focal ratio: F/7.8 


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