Quote:
Originally Posted by codemonkey
Great work, Suavi! Technically excellent (as usual), though I have to admit I'm not totally sold on the palette; my wife loves the colour though and she's a tough sell... I rarely get anything more than an eye roll out of her.
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Thank you Lee. I was disappointed with my inability to create a more interesting tri-colour image out of this data. Collecting traditional OIII instead of NII would have opened more palette possibilities. Happy your wife likes the colours though
Quote:
Originally Posted by gregbradley
Try running your focuser upside down. They flex more when in normal orientation than when upside down. Yuri from TEC tested that on TEC180 focusers.
Greg.
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Thank you Greg - didn't know that. There is also a bit of side-to-side flex, which I tried minimising with tightening bolts (one is hidden and to access it the drawtube needs to be taken out), but I found out very soon that too much tightening makes autofocusing with HSM unreliable. After taking recent images and being unable to rectify this, I'm pretty much set on replacing the focuser at some point, but for now I have accepted this limitation and just trying to enjoy imaging. In the past I didn't see this flex because I used to have a narrow window on the sky and used to get max 2-3 hours per night with the same telescope orientation. Now, when following the same target for from east to west, flex became apparent, and by elimination (PA, guiding etc) I now believe that elongated stars are becasue of the focuser. It was difficult to pinpoint the issue, particularly given the reputation that FTFs have.