Celestial hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  Crab nebula  ·  HD245010  ·  LBN 833  ·  M 1  ·  NGC 1952  ·  Sh2-244
The Crarb Narb, Mike Hamende
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The Crarb Narb

The Crarb Narb, Mike Hamende
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The Crarb Narb

Equipment

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Acquisition details

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Description

The image title is a bit of an inside joke.  I pulled the newtonian inside for what I hope is the last modification it will need.  I noticed that the tube underneath the focuser could flex which made the imaging train sag in different directions while slewing around.  I had some tube rings laser cut from aluminum and turned some dowel nuts on the lathe.  I put a few pictures in the revisions.  The focuser is much more stable now and I'm hoping it will hold collimation at any angle.

Comments

Revisions

  • Final
    The Crarb Narb, Mike Hamende
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B

Title: Secondary mirror alignment tool

Description: I've also made a tool for aligning the rotational axis of the secondary to the focuser. The tool is placed in the focuser and the plate is pushed in until it is a mm or two from the secondary. You then simply ensure that the bottom edge of the plate and the reflected edge are parallel and you've got simple alignment.

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C

Description: Showing the secondary rotation aligned.

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Sky plot

Sky plot

Histogram

The Crarb Narb, Mike Hamende