BlueAstra

Not sure where the correct place to post this is, so please move if required. I have a ZWO 224c camera imaging through a C9.25. If I use SharpCap 3.2 I get the first image (single frame from video), which appears to be very noisy. If I use FireCapture I get the second image which looks much smoother. I'm pretty sure I used the default settings, more or less, with each software package. Can anyone explain what is happening and how I can get a smoother image in SharpCap? Or is it an illusion and just some display artefact which won't affect the final image? FireCapture Jup_002201.txt SharpCap 00_09_11.CameraSettings.txt

On iPhone or iPad, goto settings/general/accessibility/display accommodations/colour filters. Select ‘on’ and select colour tint. Move intensity and hue sliders all the way to the right. Then goto general/accessability/accessibility shortcuts and tick colour filters. You can now switch between a red or normal screen with a triple click on the home button.

oops. always read the instructions!

This is Mare Crisium, also taken 19.4.2018. Evolution 9.25 & ZWO 224MC.

This is Langrenus taken 19.4.2018. Evolution 9.25 & ZWO 224MC.

OK I have it now. You gently rotate the top plastic cover with the Fastar plate on it. I think the lower finger holes are for removing the mirror.

I have a Celestron 9.25 SCT, but I can't see any collimation screws at the secondary mirror. The manual shows the screws clearly visible, but mine appear to be under cover, as shown in the photo. I know this mirror is removable to fit a Fastar system so I don't want to turn the wrong thing and see the mirror drop out. What precisely do you do to access the collimation screws and not remove the mirror?

Thanks for the comments. Does the 150 have any significant advantage over the 127 (considering the 150 is twice the cost of the 127)? Should I buy two 127 instead of the 150 for the world's biggest binoculars !

Bresser and SW both do 127 and 150 Maksutovs, with the SW being a bit cheaper. Does anyone have any views on the relative strengths and weaknesses of the two brands, and which to go for? Are there any other Mak brands I should be looking at?

I have a pier on about 500mm cube of concrete, the soil is pretty stable and I've noticed no movement. I drilled holes in the concrete and glued (as above) studs to mount the pier. The space under the mounting plate is useful for an EQ6 adaptor, storing my nettop PC and 12V PSU. If you end up with a Paramount mount, the holes in the top plate are pre-drilled for it!

Here are some reflecting systems I have own/owned: