Uploaded April 2026 | Updated September 2026, 2 weeks ago

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In this world of triplets, quads, quints and petzvals of all kinds, it seems like the humble doublet is somewhat forgotten, in this video I take a look at one available exclusively from 365astronomy (who kindly loaned this for review) and we see what's good, not so good, and perhaps bad about it in this honest review. I test the 1.0x, 0.8x and 0.6x corrective optics to see where they break down and dive into test data, along with real-world usage reports.

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BlurXTerminator -
rc-astro.com/software/bxt/?refId=f712c623b0bbe906

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rc-astro.com/software/sxt/?refId=f712c623b0bbe906

NoiseXTerminator -
rc-astro.com/software/nxt/?refId=f712c623b0bbe906

GradientXTerminator -
rc-astro.com/software/gxt/?refId=f712c623b0bbe906

StarShrink -
rc-astro.com/software/ss/?refId=f712c623b0bbe906


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firstlightoptics.com/smart-telescopes/zwo_seestar_s30_pro/ref/lukomatico

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#astrophotography #space #stars #nebula #seestar #zwo #telescope #smarttelescope

timestamps
00:00 Intro
00:38 Corrector options
01:20 Test rig view
02:10 Build and finish (plus unbox montage)
02:38 focuser notes
04:40 weight, size, what's it like to use
06:00 dew shield issues
06:40 focuser lock issue
07:40 accessories included
08:10 scope finish
08:45 auto-focus warning (EAF particularly)
09:50 image testing part 1 - Fullframe OSC
10:22 Fullframe 1.0x
12:15 Fullframe 0.8x
14:23 Fullframe 0.6x
16:05 533 Mono testing
16:30 533m 1.0x
18:20 533m 0.8x
19:05 533m 0.6x
20:00 broadband imx571 0.8x data
22:42 dualband imx571 0.8x data
24:36 image showcase
25:40 wrapping up, final thoughts, credits