IDAS M54 OL7.5 Frame
Overview and Installation Guide

prepared by ICAS Enterprises

• 1. Product Overview
• 2. Key Features
• 3. Usage & Connection Examples
• 4. Product Lineup
• 5. Appearance

1. Product Overview
The IDAS M54 OL7.5 frame holds the IDAS filters series, and is an frame adapter with an optical path length of 7.5mm.
It is designed to be used directly between a Celestron RASA 8 and a standard M54 camera with a 17.5mm flange back (FB). It can also be used in combination with other standard M54 adapters.

2. Key Features
-Optimized 7.5mm Optical Path Length
Designed to fit perfectly between a RASA 8 and a 17.5mm FB camera.
-Generous Clear Aperture (CA) 47mm
The large aperture design allows it to be used with ZWO dual-sensor cameras and full-frame sensor cameras without worrying about vignetting (peripheral light fall-off).

3. Usage & Connection Examples
[Usage with RASA 8 ]
Use an "M42 to M54 Adapter Ring" on the RASA 8 telescope side to connect an M54 standard camera with a 17.5mm flange back.
(M42-to-M54 adapter ring is bundled to M54 OL7.5 "ADP", but no bundled to M54 OL7.5 (wihtout "ADP" suffix).

4. Product Lineup
To be available with the following IDAS filter substrates effective August 13th, 2026:

5. Image of each IDAS filter substrate in M54 OL7.5 frame

CLEAR M54 OL7.5	DTD M54 OL7.5 (under development)	GNB M54 OL7.5
HEUIB-II M54 OL7.5	NBZ-II M54 OL7.5	NGS1 M54 OL7.5

M42-M54 Adapter To be bundled with M54 OL7.5 "ADP"

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