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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.

Astronomy is our job

Observatory Telescopes

Big prime focus telescopes for private or public observatories including installation and full service.

Robotic / Remote

Robotic instruments for automatic imaging or telescopes for remote observation.

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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SBIG Filterwheels

Still too few filter slots for you? The highlight of the AFW: With a special dual filter wheel adapter, you can couple 2 (identical) filter wheels. This provides a total of 22 free filter slots for the AWF-12 and 18 for the AFW-10.

SBIG AFW Filter Wheels

SBIG AO-X Adaptive Optics

SBIG FW8S-Aluma Filter Wheel

FW8S-Aluma is the 8-position filter wheel for Aluma CCD Series cameras. It includes a 40-12053-00 adapter plate (STL style t fw8s hreads, 2.156″ x 24) and a 40-12121-00 2″ nosepiece adapter.

Features

The carousel holds eight 36mm filters and inserts are available for 1.25″ filters. The 36 mm filters provide unvignetted imaging for the largest Aluma sensors.

Aluma wheels include a positive centering mechanism that precisely centers each filter in the exact same position every time. This single-pixel accuracy completely eliminates ghost images of dust spots and other artifacts after flat-fielding.

The left-hand image below shows a dust spot on the filters. A flat-field calibration frame was taken, then the filter wheel was rotated several times before taking a second picture, which was flat-field calibrated, at right. No evidence of the dust spot is visible. This high precision results in the highest quality images and excellent photometric accuracy.

bsp1 fw8s1 fw8s2

Additional Information

	Filter Size: 36mm / 1.25"
	Weihht: 1.8 lbs
	OS Compatibility: Windows 32 and 64 bit OS, Mac, Linux

accfw8

Filter Insert 36mm to 1.25" Adapters

36 mm Round Optical Filters

1.25″ Round Mounted Optical Filters

Adapter Plates for Compact Cameras

User’s Manual

The Aluma system manual includes instructions for all Aluma cameras and filter wheels.

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Backfocus Table

Backfocus configuration table

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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.