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APM Professional Telescopes

1m F/8 Ritchey Chrétien with dual Nasmyth Foci, Cape Town (South Africa)

Another large telescope for the South African Astronomical Observatory (SAAO). An 1m F/8 Alt-Az mounted Ritchey Chrétien for robotic use. It has dual Nasmyth Foci. The main telescopes used for research are located at the SAAO observing station (32°22.795’S 20°48,657’E) near Sutherland in the Northern Cape, a 4-hour drive from Cape Town.

ASA Telescopes

ASA600 with DDM200

ASA600 OTA is the perfect fit for the ASA direct drive mounts with absolute encoders. As all ASA telescopes the ASA600 is equipped with quartz glass optics from ASA.

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Chroma Filter

Optical Filters for Astronomy Applications - made in USA

Diffraction Limited Cameras

SBIG FW7-STX Filterwheel

stx fw51 25 1 The SBIG FW7-STX is a 7-Position, 50mm square filter wheel. Supports:

Aluma AC4040
Aluma AC2020
STX Series

The SBIG FW7-STX is a 7-Position, 50mm square filter wheel for STX, Aluma AC4040, and Aluma AC2020 cameras. Works with the STX Guider or SBIG StarChaser SC-4 Off-Axis Guider Camera for self-guiding with the sensor in front of the filter wheel. Can also be used with an STL camera, using an ACC10 Adapter. We recommend 2mm thick, 50mm x 50mm square unmounted filters. It is possible to install 3mm filters if you do not fully tighten the carousel filter retainer screws. Thin 1mm filters are not recommended, and will require shims, not available from us.
Please note that this wheel is not compatible with Aluma AC455.

50mm Round or Square Optical Filters

Filter SBIG

LRGB Package
Narrowband Package HA+SII+OIII
Deep Sky Package LRGB+HA+SII+OIII
Clear
Luminance
RED
Green
Blue
Hydrogen Alpha
Sulphur II
Oxygen III

SPECIFICATIONS

Computer Interface	I2C
OS Compatibility	Windows 32 and 64 bit OS, Mac
Weight	4.4 lbs
Filter Size	50mm Square

DOWNLOADS

User’s Manual

Installation, and operation instructions for FW5/FW7-STX Filter Wheels.

Download

Backfocus Table

Backfocus configuration table

Download

APM Professional Telescopes

1m F/8 Ritchey Chrétien with dual Nasmyth Foci, Cape Town (South Africa)

Another large telescope for the South African Astronomical Observatory (SAAO). An 1m F/8 Alt-Az mounted Ritchey Chrétien for robotic use. It has dual Nasmyth Foci. The main telescopes used for research are located at the SAAO observing station (32°22.795’S 20°48,657’E) near Sutherland in the Northern Cape, a 4-hour drive from Cape Town.