Joe Carr
Attach 300D to LX-90
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Attach 300D to LX-90
Dark Frames-CP4500
Dark Frames-Canon 300D

How do you attach a Canon 300D Digital Rebel to a Meade LX-90 telescope?  Three ways, depending on what field of view (FOV) you need.

Moderate FOV - mid magnification for average sized Deep Sky Objects, Moon mosaics Wide FOV - low magnification for large Deep Sky Objects & full disk images of the Moon Narrow FOV - increased magnification for Planets, small Deep Sky Objects & Moon detail
Use the normal Meade T-adapter for the LX-90 coupled to the Canon EOS T-adapter. Use the normal Meade T-adapter for the LX-90 coupled to the Canon EOS T-adapter.  This photo doesn't show it, but add an f/6.3 Focal Reducer in place of the Skylight filter.  This results in a wider FOV for larger objects. Use the Meade Variable-Projection Camera adapter (p/n 07361) coupled to the Canon EOS T-adapter.  A 1.25"  magnifying optic (eyepiece or barlow) is mounted inside the Camera adapter to increase the size of the object being photographed.

Please note: the Skylight filter attached to the back of my LX-90 is optional equipment.  It is not required for astrophotography work, but is shown in these photos.

WARNING - Do not slew your LX-90 telescope with the above adapters and camera attached. There is not sufficient clearance with the telescope base when the optical tube is pointed to high altitudes.  It is recommended that you remove the adapter assembly, slew the LX-90 to point to your intended target, then re-attach the adapter assembly after verifying there is sufficient clearance with the telescope base.  It is also important to note that the normal tracking motions of the telescope may bring the attached assembly into contact with the base. Use caution, and do not leave your LX-90 unattended while using the setup illustrated above.

Attaching this setup to your LX-90 will result in the telescope being out of balance.  It is highly recommended that you rebalance your telescope using the Meade counterweight system or equivalent, otherwise tracking errors and abnormal wear on the LX-90 gearing systems may result.

 

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Revised: August 26, 2010

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