18.84
#...
·
1
like
|
|---|
|
Hello Solar Imagers, inspired by many beautiful Ha solar images here, I decided to expand my equipment in the direction solar imaging. I have ordered a Solar Spectrum 1.5 0.5A filter, D-ERF and TZ3 for my TEC140. But the camera purchase is pending since I have not met a decision yet. Here are the physical parameters of the system: FL: 980mm native. With TZ3 at approx 3000mm and with 0.4 reducer at 1200mm Opening of the Solar Spectrum Filter itself: 25mm I have calculated an approx. size of the sun disk of 13mm with 0.4 reducer, which will give the minimum sensor size to get an image of the entire disk. In this range I find the ASI174 and the ASI183. Pro ASI174 - global Shutter - very high speed frame rates Cons ASI174 - rather low resolution - 6 years old design Pro ASI183 - big Sensor - high resolution Cons ASI183 - very small pixel size - rolling shutter - Moreover there are some reports of a visible dark grid when imaging in narrow Ha which has to be compensated with darks/flats. For all these pros and cons I would appreciate some advice for which camera I should go for. Thank you in advance for your value feedback. Clear skies Rüdiger |
|
18.84
#...
·
1
like
|
|---|
|
Hi all, just to close the thread: I went for the ASI174MM due to its global shutter, bigger pixels and sensor size. So far I am very satiated, though it is a rather old sensor. CS Rüdiger |
0.00
#...
·
1
like
|
|---|
| indded old but still the best! |
|
18.84
#...
·
1
like
|
|---|
vincent: You are right. I did not regret buying the 174. I have tested also the 290 from a friend, but the 174 has a much smoother and more pleasant image. Also I was able to shoot one of my best Moon images with the 174. I think the global shutter is an advantage which is very often underestimated. The 174 even delivers a better result as the 6200 on the moon. That's amazing. The 174 is definitely an excellent addition to the 6200. |
