# 23 Oct, 2019 04:15
Hi,I planning to buy refractor Tecnosky AP 70/420 ED + 0.8x reducer/flattener and mount iOptron SmartEQ Pro+.|
How long exposure manages to do this setup without guiding?
# 23 Oct, 2019 20:11
|I have one with a William Optics Z61 so our weights aren't too far off. I like the mount but I will say it's pretty erratic. The longest I've been able to get a decent unguided shot was about 2 minutes. Guiding helps out immensely!|
# 23 Oct, 2019 22:42
60/360 + a crop sensor and I own a specimen of unusually strong personality. 61 seconds has been the absolute best, usually I manage 30 to 40 seconds and even then a significant percentage will have observable trails.|
Guided gives me 1-3 minutes without much trouble.
Slightly east-heavy balancing, fixing the play, perfect PA, tightening the knobs, all them help.
But it will always want to throw a tantrum for about one minute every two to five minutes, that's the core urge you are fighting against, both guided and unguided.
# 24 Oct, 2019 10:47
I've one of these but I never tried to use it unguided. Anyway one of the weak point of this little one is the tripod in dotation.|
There're some mod that can help to improve the stiffness and the mounting hole of the head is luckly a standard 3/8" so if you have heavy-duty photo tripod you can use it instead of the unstable one in dotation.
# 24 Oct, 2019 15:22
|I was a user of this mount, but I have to say that without guiding it would be quite terrible, maybe 10 seconds or more? I don't know the total weight of your instruments, but if guided you can expect a picture of 5 min exposure without trails, although the result is not that robust. Anyway it is cheap and portable enough. It is worthwhile to have a guiding system. Have fun.|
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