Cool close up!

christian viladrich wrote: ↑Sat Sep 09, 2023 9:01 pm but also frustrating because it is very noisy due to the very weak signal, and a [bad-word] reflection that I have never been able to eliminate it completely.

I had completely the same with my 1a Alluxa, try reversing the filter, I found it went when I did this.

This was the best graphic I could find of the transmission of the triband - I would say it won't work for G-band. Looks like it has cut off by 425nm.

Very interesting, thanks Bob and Mark. So the CaK PST sits high above target CWL in it's native form, and with a 'tighter' bandpass than it's specified 2.2a. However, sat in it an f10 beam that the CAK PST is, the filters CWL should shift blue towards the actual target wavelength at the expense of a...

Excellent closeup!

A lovely set here ALex

These are great Warren, that clocking has been a really effective upgrade to image contrast. You should get a camera with smaller pixels for your full disks, the difference in resolution will be quite dramatic.

astro-florida wrote: ↑Fri Sep 22, 2023 11:21 pm

marktownley wrote: ↑Fri Sep 22, 2023 6:14 am What scope are you using here Sai?

hey mark -
for this setup, i used a lunt 102 f/7 doublet with lunt 1200 straight-through cak filter.

-
best regards.
sai

Stop this down to 70mm (ideally 50mm) and you will get a lot more contrast. You won't be losing any resolution at full disk scale.

Yes and Yes.

You probably will fimd you shouldn't really need to change the pressure tuner that often to be fair.

These are nice Lou!

Is the reflection from the blocking filter, have you tried rotating it and seeing what happens?

Thanks for the report JAmes! First aid done (and passed), is beer o'clock now, bedtime soon ahead of (alledgedly) clear skies tomorrow, Have a great weekend!

A lovely disk thanks Ivan

Very good!

A nice collection there!

The mak I have an eye on (very preliminàry) is the 7" SkyWatcher OTA. It is just a potential option vs the SCTs https://skywatcher.com/product/bk-mak180-otaw/ Does your seeing really support this aperture in CaK Brian??? That's the equivalent of being able to support 11" in Ha? I would ju...

A nice set here Eric thanks!

You get lots of sunshine!

Nice overview.

Nice disk!

(trim the hedge!)

Carbon60 wrote: ↑Fri Sep 22, 2023 1:56 pm Weird how our brains work.

Pareidolia

Very 'Scream'!

Brilliant Douglas!

What scope are you using here Sai?

These are excellent James! I looking forward to a sunny saturday (morning), today I am on a first aid course, and after that it will be beer o'clock!

Stunning as usual Douglas!

I will have to go and check the full disks...

Stunning as usual Douglas!

I will have to go and check the full disks...