No.8 )
So the wind last night had passed and left .
I had found a chance to take a moon photo last night .
It's the Mare Imbrium , a large oceanic area on the moon .
You can check several apparent areas as well from the moon map I provided , I had bold it in Red blocks .
TheFOV of this picture ( DSI plus 2X barlow ) this time is about 12" ,according to the indication on the moon map software . Starting fromnow, I can use this software to physically measure the FOV of anytelescope imaging system . And I can even measure the distance betweentwo points on the moon directly . In the old time , I can onlycalculate ( i.e. estimate ) the FOV , but now I can measure it directlyand PHYSICALLY with the help of the actual moon crators , this is veryimportant to me .
I am not using a web cam this time indeed .
282 flames is collected in about 5 minutes from DSI .
Comparingto webcam , Just several second can be collected for such number offlames in a video format . The shorter the time , the less therequirement from the mount's tracking . So DSI surely can cause moreshifting in image than the web cam . However , such image shifting canbe recovered easily from any image-process software . And DSI is moresensitive than my ordinary web cam , ( even the price is moreexspensive ) , thus , I may use DSI to take moon photo in future , andtotally replace the use of a web cam . Because DSI is more generic inmy situation .
Clear skies everybody .
