Contains:  Solar system body or event
Sun CaK, AR3664 / AR3668. 09052024, SW 150mm f/8 optimised., BartM

Sun CaK, AR3664 / AR3668. 09052024, SW 150mm f/8 optimised.

Acquisition type: Lucky imaging
Sun CaK, AR3664 / AR3668. 09052024, SW 150mm f/8 optimised., BartM

Sun CaK, AR3664 / AR3668. 09052024, SW 150mm f/8 optimised.

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

With help from for example @Alan I optimised a 150mm Skywatcher Achromat for CaK by enlarging the airgap between the two lenses to 3,2mm. 

ring_zijaanzicht.png

Telescope now looks like this:

Cak_09052024.png
Last thursday was the first test, and what a luck to be able to use AR3664 / AR3668 for a first light! Homemade doublestack CaK imaging train consists of:

- a 2 inch Antlia Erf
- one of the two filters out of the nosepiece of a Lunt CaK filter.
- a KG3-filter for IR protection.
- nosepiece of a Barlow (2,7x
- PST yellow filter in a tiltable holder (Raf Camera)
- Another PST yellow filter in a tiltable holder (Raf Camera)
- ASI290MM

cak_trein_mei2024.png

Comments

Histogram

Sun CaK, AR3664 / AR3668. 09052024, SW 150mm f/8 optimised., BartM