Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  The star 32And  ·  The star νAnd
M31 @ 300mm (2015-10-04), evan9162
M31 @ 300mm (2015-10-04)
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M31 @ 300mm (2015-10-04)

M31 @ 300mm (2015-10-04), evan9162
M31 @ 300mm (2015-10-04)
Powered byPixInsight

M31 @ 300mm (2015-10-04)

Equipment

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Acquisition details

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Description

Testing out a vintage (ca. 1962) Asahi (Pentax) Takumar 300mm F4 lens. Short integration time (I was cold and tired and wanted to go home). Aperture was F/5.6 or F/6.3. This lens has an 18-blade aperture, so produces extremely nice diffraction spikes around stars. Produces some CA around stars which can be easily cleaned up in post. Needs a better mound than an EQ-3...

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Revisions

  • M31 @ 300mm (2015-10-04), evan9162
    Original
  • Final
    M31 @ 300mm (2015-10-04), evan9162
    B

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M31 @ 300mm (2015-10-04), evan9162