ALPY science camera coupling

Simultaneously focusing the ALPY and maintaining a horizontal spectrum can be fiddly, particularly if the camera is swapped in and out for other duties. To make life easier I use a rotatable dovetail coupling from Teleskop Service

http://www.teleskop-express.de/shop/product_info.php/language/en/info/p5547_TS-T2-Thread-360–Rotation-and-Quick-Changer—5-5mm-short.html

This is slim enough to still allow the ATIK cameras to reach focus and means I can quickly remove and replace the camera, aligning the spectrum horizontally, without losing focus.

Cheers

Robin