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Thursday 7th May 51, 47F. Bright start but became much cloudier.
8.30. All set up but cloud streaming over from the NW.
Spending time aligning the mounting to stop image drift.
I made a simple angle bracket for the azimuth adjuster out of thicker aluminium. The original was too thin and flexed.
I now have a proper step up stool, cum two tread, stepladder. I have been hopping up onto a plastic beer crate for years. Which was very close to disintegrating. So needed something safer and easier to climb. Very happy with the stability of my new observatory Jumbo.
Late afternoon and the ASI174MM camera was showing 42C after only a couple of minutes on the sun in H-a.
The telescope had been sitting in the shade of the dome since lunch time because of the bad seeing conditions.
A veil or mask, much like the ASI120MC, now obscured the view of the sun's surface features. The mask did not rotate with the camera. I zoomed in on the live image using SharpCap and could clearly see the translucent, overlying mask. Though it is very grainy it isn't of the same kind as my ZWO ASI120MC. The latter is much coarser.
Note that these images are captured using SharpCap's "Snapshots" button. No processing is involved except for cropping and resizing in PhotoFiltre7. Note the awful seeing conditions. I have not been able to capture a single worthwhile image all day.
After the camera had reached an indicated 41C I had wrapped the ASI174MM in a large, sealed polythene bag. Then placed it on a shelf in the fridge [Not in the ice box] to cool it down. Just to see if the translucent mask is obviously temperature related. The outside air temperature in the shade is 60F or 15C. 68F in the open dome.The camera sensor had dropped to 18C when I checked it on the indoor PC using SharpCap. This had risen to 31C by the time I had refitted the camera to the telescope and refocused. See images.
By the time I had typed the paragraph above SharpCap was already reporting 41C again. I zoomed up to 300x again [in the live image box] but the noise was now about the same as the 31C reading. Very odd.Tomorrow I shall try AS!2 to see if it automatically sharpens my images like AS!3.
Spending time aligning the mounting to stop image drift.
I made a simple angle bracket for the azimuth adjuster out of thicker aluminium. The original was too thin and flexed.
I now have a proper step up stool, cum two tread, stepladder. I have been hopping up onto a plastic beer crate for years. Which was very close to disintegrating. So needed something safer and easier to climb. Very happy with the stability of my new observatory Jumbo.
Late afternoon and the ASI174MM camera was showing 42C after only a couple of minutes on the sun in H-a.
The telescope had been sitting in the shade of the dome since lunch time because of the bad seeing conditions.
A veil or mask, much like the ASI120MC, now obscured the view of the sun's surface features. The mask did not rotate with the camera. I zoomed in on the live image using SharpCap and could clearly see the translucent, overlying mask. Though it is very grainy it isn't of the same kind as my ZWO ASI120MC. The latter is much coarser.Note that these images are captured using SharpCap's "Snapshots" button. No processing is involved except for cropping and resizing in PhotoFiltre7. Note the awful seeing conditions. I have not been able to capture a single worthwhile image all day.
After the camera had reached an indicated 41C I had wrapped the ASI174MM in a large, sealed polythene bag. Then placed it on a shelf in the fridge [Not in the ice box] to cool it down. Just to see if the translucent mask is obviously temperature related. The outside air temperature in the shade is 60F or 15C. 68F in the open dome.The camera sensor had dropped to 18C when I checked it on the indoor PC using SharpCap. This had risen to 31C by the time I had refitted the camera to the telescope and refocused. See images.
By the time I had typed the paragraph above SharpCap was already reporting 41C again. I zoomed up to 300x again [in the live image box] but the noise was now about the same as the 31C reading. Very odd.Tomorrow I shall try AS!2 to see if it automatically sharpens my images like AS!3.
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