The 17 Days Old Moon (astropical)

Contains: Solar system body or event

The 17 Days Old Moon

Link: https://www.astropical.space/moon/

Acquisition type: Lucky imaging

The 17 Days Old Moon

Link: https://www.astropical.space/moon/

Acquisition type: Lucky imaging

A few clouds, seeing was fair, the air relatively calm but high altitude haze persisted.

Anyway, the reason for getting up at 1:00AM was for roughly measuring the effective magnification factors of two tubeless 1.6x and 2.0x "nose piece barlows" when attached between a Baader Clickstop ( as visual back for the C8 ) and the 1.25" nose piece of an ASI290MM.

Measuring the diameter of Lacus Mortis in pixels I found that the approximate magnification factors, being 1.2x and 1.4x, respectively, all within the range of meaningful image scales. Captured through a standard 2x barlow with tube the lunar features should be over twice as large as compared without barlow (native FL=2030mm). By "eyeball" I'd say it fits.

B

Description: Mosaic of 25 panels, no barlow, 5.5ms, gain 100, 172fps, 600x

Uploaded: ...

C

Description: Janssen craters, 2x barlow, 5ms, gain 200, 172fps, 600x

Uploaded: ...

E

Description: Rupes Altai, 2x barlow, 5ms, gain 200, 172fps, 600x

Uploaded: ...

F

Description: Mare Nectaris and crater Theophilus, 2x barlow, 5ms, gain 200, 172fps, 600x

Uploaded: ...

G

Description: Posidonius, 2x barlow, 6ms, gain 200, 166fps, 600x

Uploaded: ...

H

Description: Lacus Mortis and crater Burg, 2x barlow, 65ms, gain 200, 166fps, 600x

Uploaded: ...

I

Description: Crater Plinius, 1.6x barlow, 5ms, gain 200, 172fps, 600x

Uploaded: ...

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PixInsight job	n/a
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The 17 Days Old Moon

The 17 Days Old Moon

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The 17 Days Old Moon

The 17 Days Old Moon

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Description

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C

E

F

G

H

I

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