Looking good Eric despite the quietness!

Yup! That's pretty blank!

A good capture of the liftoff.

Great record Eric!

Lovely full disks Eric!

Another great set Pedro! Send some of your sunshine our way.

Spot on Marty!

Nice images Brian, glad you got some sun! I always like seeing pictures of your place. Your setup in the obs is great too!

They're all good but I do like number 4. Any chance you could put an unprocessed (straight from stack) version of this image? I'm curious as to what your raw data looks like before processing.

Nice additions!

Good results Marty! You skies look nice and blue in between the clouds.

pedro wrote: ↑

Sat Jan 12, 2019 7:06 pm

Thanks Mark

I will give it a go but my feeling is that I get better results with Single-Stack

I think you do too. That 60 of yours is a nice scope.

These look good Eric! Glad the sun is shining for you.

Great images Pedro! We're just sat under incessant cloud at the moment it seems. How do you find the 180 as you use it more Pedro?

I always adjust inner etalon first and then get the double stack etalon tuned so there is no banding due to excess tilt. The primary etalon then gets fine tuned accordingly.

Simulator sounds fun, i'll give it a try later in the weekend.

Good collection indeed! I'm guessing you run with low gamma on the camera when you are doing your disk shots Pedro? That's why the SS/DS side by side shot the DS looks much darker but with little difference in contrast to the SS shot. My DS shots I run with neutral gamma, sometimes run higher gamma ...

Nice prom shot!

A nice set of images there Pedro! I never think of you as having low temperatures like that - was it your overnight low temperature? How low do / can the temperatures go where you are?

Not sure myself how you would align that many frames so interested in the solution too...

Hi Andrew,

You could use a MagniMax barlow from astroboot https://www.astroboot.co.uk/AstroBoot/t ... eedle=1.25 right infront of the negative collimating beam which would turn the f7.5 light cone towards the target f10.

Mark

I think with the 6" triplet it's not the scope that is at risk of damage, rather the Quark. The scope just 'passes' the light, if you think about its perfectly safe (on the scope) using a herschel wedge for example on the sun. As the aperture increases then so does thermal load on the Quarks blocker...

Thanks Mark, that's a good point about starting with the PST and then the Quark for tuning. I'll try that next session. Very best, Due to a small size of a PST sweet spot, this will probably work only for a very narrow FOV. Valery The PST etalon is in a telecentric beam so i'm not seeing a sweet sp...

A good first shot from back in the day...

A great set as always Marty!