Canon EOSII RebelT7i 'modified by Hutech' using a 'TPO 80A 2in. filter' thru a TeleVue 2XPowerMate for 2400mmFL thru a 152mm A+M Refractor(OfficinaStellate) for two TIFFs turned to Mono with 'orange' filter in Canon Digital Photo Professional 4 , and 'Linear' used . Then the two TIFFs into MaximDL Pro V6.16 to Average stack them and then .. into "ImagePLus" to try varios commands . What I was trying to see is if there ia any light in the lower area the 'blue' filter could reveal ... maybe there is some and the stars show better than with the Baader 7nm Ha I was using before this last Saturday when the sky just happened to clear for the night ... the original image is in color and is pale colors but red tinted in the background . I 'focused' with the Ha on the thin Moon with 'LiveView' and I didn't change the 'focus' position all night till the end of imaging ...ending with M4 . OPTCorp has a 'TPO 82A very light-blue' that might work better ?.!.?.x