Askar multifunctional filter changer

Codice articolo: ASFD

Askar´s filter drawer allows filter changes to as little as 18 mm and provides maximum versatility for astrophotography.

Connections at the telescope side: T2 (M42x0.75), M48x0.75 and M54x0.75 female thread - all adapters included
Connections on camera side: T2, M48x0.75 and M54x0.75 male thread - all adapters included
Inserts for mounted 1.25" and 2" filters included
Inserts for unmounted 31 mm, 36 mm and 50 mm filters included in scope of delivery
Height of the filter changer only 18 mm (without external thread)
The set consists of 10 parts - filters are not included in the scope of delivery
The filter holder is securely fixed in the base body with magnetic force

The multifunctional filter changer consists of:
The base element to which the adapters on the camera and telescope sides are connected. This base element also accommodates the filter holders.
The filter holders with inserts for all common filter sizes. Three filter holders are supplied: one for 1.25" and 31 mm filters, one for 36 mm filters and one for 2" and 50 mm filters.
The telescope-side adapters with M42x0.75 (T2), M48x0.75 and M54x0.75 female thread
The adapters on the camera side with M42x0.75 (T2), M48x0.75 and M54x0.75 male thread
Suitable screws to fix the unmounted filters are also included.

Application tip from Teleskop-Service - How to achieve 55 mm working distance:
If you want to integrate an off-axis guider, we recommend the # ASOAGM54. With a normal flange focal distance of your camera of 17.5 mm, you will achieve exactly the 55 mm working distance with the off-axis guider, the # ASFD filter drawer and your camera that many correctors require.

If you want to work without an off-axis guider, you can reach the 19.5 mm with suitable extension rings and tuning rings. The following is an example for correctors with M48x0.75 camera connection and for cameras with 17.5 mm flange focal distance (e.g. cooled ZWO or TS-Optics cameras):
M48tuning ring2 ... thickness 1.5 mm
TSVF210 ... thickness 10 mm
TSVF208 ... thickness 8 mm

Type: Filter changer
Material: Aluminum
Telescope side connection: T2, M48 and M54 female thread
Camera side connection: T2, M48 and M54 male thread
Suitable for the following round filters: 1.25" and 2" mounted, 31 mm, 36 mm and 50 mm unmounted
Optically effective height: 18 mm