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Friday 20th. Early cloud is clearing from the north west to blue skies and continuous sunshine.
10.00am. The sky is now clear.
10.34: First processed capture. Air reasonably steady but not much definition. Discovered dewing on front of objective. Removed D-ERF and used hair drier.
Even image brightness at 800x600. Slight cropping for brighter right side of image. Mono8, 1ms, Gain 180, 320fps, 3k frames.
ASCOM[AWR] now denies access to Port Com3. Tried disconnecting IH2 and then switching everything off. No difference. Can't connect telescope! Can't Sync.
Unplugged serial cable from USB hub and inserted it directly into the laptop. Now the telescope connects but no Sync? Weird! Tried again and Skychart now Syncs.
11.00 50/45 In/out. Capturing a pale AR on North Eastern quadrant near the limb. Definition not great despite steadiness. Just a gentle large scale thermal shaking. Not the usual boiling.
I really should motorize the focusing. Then I can zoom in using SharpCap and concentrate on the monitor screen. Without the shaking caused by manual focusing.
11.50 More general thermal shaking now. The NW wind has really picked up. No wonder it feels cold! Thankfully it isn't blowing into the dome. Just across the building under the floor. It is interesting how the obscuring cloud direction on the monitor screen has turned 90° in a little over an hour and a half.
Not very warm in the dome. So I've fetched my down jacket. The processed images are not improving! I have now re-adjusted the etalon tuning for darkest overall image. Not sure it helps. None of it looks realistic.
ASCOM[AWR] stops tracking every time it reaches the Meridian!!!
15.00 51&45F. Back after lunch and waiting for lots of cloud to clear.
15.20 I made repeated comparisons of the PST BF5 against the Lunt B1200S2 blocking filters. BF5 left. B1200 right. BF5 has much brighter throughput than the B1200. Both have different focus points. BF5 seems vignetted. B1200 not. BF5 less evenly illuminated than B1200. Both seem to need different etalon tuning points.When processing is added to the recipe it is difficult to pin down differences in the finals images. I don't think the seeing was very good today.
10.34: First processed capture. Air reasonably steady but not much definition. Discovered dewing on front of objective. Removed D-ERF and used hair drier.
ASCOM[AWR] now denies access to Port Com3. Tried disconnecting IH2 and then switching everything off. No difference. Can't connect telescope! Can't Sync.
Unplugged serial cable from USB hub and inserted it directly into the laptop. Now the telescope connects but no Sync? Weird! Tried again and Skychart now Syncs.
11.00 50/45 In/out. Capturing a pale AR on North Eastern quadrant near the limb. Definition not great despite steadiness. Just a gentle large scale thermal shaking. Not the usual boiling.I really should motorize the focusing. Then I can zoom in using SharpCap and concentrate on the monitor screen. Without the shaking caused by manual focusing.
11.50 More general thermal shaking now. The NW wind has really picked up. No wonder it feels cold! Thankfully it isn't blowing into the dome. Just across the building under the floor. It is interesting how the obscuring cloud direction on the monitor screen has turned 90° in a little over an hour and a half.
Not very warm in the dome. So I've fetched my down jacket. The processed images are not improving! I have now re-adjusted the etalon tuning for darkest overall image. Not sure it helps. None of it looks realistic. ASCOM[AWR] stops tracking every time it reaches the Meridian!!!
15.00 51&45F. Back after lunch and waiting for lots of cloud to clear.15.20 I made repeated comparisons of the PST BF5 against the Lunt B1200S2 blocking filters. BF5 left. B1200 right. BF5 has much brighter throughput than the B1200. Both have different focus points. BF5 seems vignetted. B1200 not. BF5 less evenly illuminated than B1200. Both seem to need different etalon tuning points.When processing is added to the recipe it is difficult to pin down differences in the finals images. I don't think the seeing was very good today.
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