Venus in CaK and Oiii
The gear, as usual, was the N150/750 on a modded EQ3 autoguided by the soapbox project. As a camera, it was the modded-to-be-cooled ASI178MM, with an automated, originally manual filter wheel. I used the OIII and the CaK filter this time, to create to bicolor combo.
Same gear as before, too lazy to write it down yet again. The green and CaK filters got into this picture.
Venus, green plus calcium K
The same exact gear, it’s getting boring to write it down. Only this time, it was between passing clouds, quite annoying.
(tovább…)
Venus green+U
The same gear, but now the fully automated filter wheel with its hand controller optionally connected to the soapbox project and the desktop app now controlling sharpcap — telling it which filter is active. This day the Venus U filter yielded the best result.
In fact, the pros and cons in my experience with Venus, two different barlow lenses and two different scopes, the N150/750 and the N250/1200:
| filter | pro | con |
| Venus U | brighter image | way less sharp, could be due to the barlow not being optimized |
| CaK | quite sharp | darker image needing longer expos/higher gain |
CaK and red combined
Same exact gear as before. (tovább…)
Venus with the U filter and the OIII this time
Same exact gear, except for using the Venus U filter for this shot. Was it luck or something else, this time the Venus U image was better than the Calcium K. Not the best seeing. So, the outcome is:
Venus
Same exact gear, but worse seeing. Also, it’s curious that the contrast on Venus has diminished somewhat.
Venus
Using the same gear as yesterday, the N150/750, the motorized filter wheel, the green and Calcium K line filters and the cooled ASI 178MM, all guided by the soapbox, I imaged Venus.
Venus, false color
Using the same gear as yesterday, the N150/750, the motorized filter wheel, the green and Calcium K line filters and the cooled ASI 178MM, all guided by the soapbox, I imaged Venus.
Venus, false color
Again, nothing new, same old gear, but I replaced the red/infrared filters because I suspect that my barlow lens is not permorming well with the wide band filters. So this time, green is the new orange, and the Calcium K line remained, as I like it better than the Venus U, at least for this setup.
N150/750 on the modded EQ3, the soapbox autoguider, ASI 178 MM with cooling added. I was looking at the amount of boxes I put together, and it’s starting to eclipse the „original” gear.
