12/19/2023 0 Comments Photoline cut hold image![]() Thank you all for allowing me to vent my frustrations getting to this point. I’ll be moving future discussions to the imaging forum since it’s mainly about the imaging performance from here on. This will also my last post in this thread unless there are some specific questions that pop up. It seems quite sturdy when you lock down the adjuster ring. The TSSC-M48 is a variable length adapter with 6mm of adjustment so I can set the backfocus exactly at the spec value. To achieve this backfocus with the ZWO EFW mini filter wheel and the Celestron OAG in the mix, the TS Optics folks helped me come up with this optical train:ĭrawtube : TSFLAT3 : TSFlat3-SC : TSSC-M48 : TSM48vvar : Celestron OAG : Filter Wheel : Camera The backfocus requirement from the M80 thread on the aft end of the flattener is 117mm (this includes 1mm added to account for the 3mm thick Chroma filters in the wheel). In order to achieve proper backfocus with the TSFLAT3 and keep every connection threaded, I had to order some unique parts from TS Optics. I’m also using the TSFLAT3 1.0X Flattener for the first time. Tonight will be the first use of that motor so I’ll be monitoring the focusing “V-curves” closely. I mounted a Moonlite stepper motor to the focuser with my own custom attachment bracket. Here is the scope in its imaging configuration with the ASI1600mm camera and a rig runner/USB3 Hub set up on the top rings. The scope is ready for a first real imaging run with the replacement lens tonight on M106. But the lens appears to be perfectly fine and now I think I can finally move forward and start to enjoy the scope should it ever stop raining!!! I had no time to try the TSFLAT3 so corner star shapes are still TBD. And unlike before, the star images were round instead of being little streaks! The image below is a 100% crop of the center. I then swapped in my ASI1600mm camera and took a few short subs of M37 with a luminance filter. Then I backed down to a low power view of M42 which was very pretty and showed good contrast. This time I used my highest powers to inspect the images. The airy disc was round and the diffraction rings were wobbly but concentric. Feed the agate straight into the saw blade, holding it flat against the table. Press the power button to turn the saw on and start the blade spinning. The turbulence was bad but it would steady up a little for a few seconds at a time and I could see no sign of astigmatism. Plug the power cord from the bandsaw or table saw into an electrical outlet. The weather has been absolutely horrible for days and days but I finally had a brief period of no rain with just a haze in the sky and poor seeing but it was enough to verify the collimation was good. They labelled it as a warranty replacement item with no commercial value on the invoice so there was zero duty charges! TS optics shipped me a replacement lens assembly which only took a little over a week to arrive. Ok.the travel ban did only apply to people not goods.
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