Quote:
Originally Posted by Terry B
I've never felt the need to use the mirror lock up option. I suppose it will depend on how secure your mount is. I think the tiny amount of vibration from the mirror going up in a 300sec exposure would be less than the variation in seeing that I get anyway.
I worry about using the live view option immediately before I start a shot anyway. Canon warns that it it will heat up with live view and I try to limit the amount of extra heat that is being generated in the camera.
Imaging last night at ~6degC sure had less noise than earlier in the year.  |
My experience with live view is that once the integration starts, the live view function is disabled. ie, the lcd screen blanks out so I suppose the issue is one of vibration.My thoughts on this are
1.My eq6 is loaded to the hilt with a 12" newtonian.
2.I am not guiding therefore my exposure times are limited to less than a minute also because I am not drift aligning until I get a reticule eyepiece (hopefully it will arrive from MyAstro soon)
3.I am having to make multiple exposures so I try and avoid the extra vibration for each exposure. The seeing and wind also play a role and so far out of every 20 exposures at least 3 to 5 are rejected.
4.Any residual heat inside the camera that accumulates during the interval between exposures is more than drowned out by light pollution.
