The global astronomical telescope market size was valued at USD 333.6 million in 2020 and is projected to reach USD 455.9 million by 2028, growing at a CAGR of 4.0% during the forecast period (2021-2028).
The global astronomical telescope market is witnessing significant growth, driven by the increasing interest in astronomy, space exploration, and astrophotography. Astronomical telescopes are essential tools for observing the night sky, planets, stars, and galaxies.
Smart telescope market :
Better description should be EAA computerised telescope
Prototype BOM cost: 1700 RMB est
定價: 犧牲利潤換市佔, 售價 USD399
時機：剛巧在2024日全蝕前推出。 但有點rush, 很多 配件eg narrowband filter(OIII30nm, Ha20nm), solar filter ( solarlite ND5)後來補加
宣傳手法誇張失實 exaggerated propaganda，不同以往的 technical marketing , 以下此圖盡現：
相中60mm f6 full frame fov vs seestar 50mm f5 6.46mm fov telescope
相中AZGTI payload 5 kg vs seestar < 2.5 kg
內置的UV-IR filter 會 cut off 紅外端的光譜，浪費掉IMX462 的 800nm 近紅外敏感度NIR sensitivity。
相中5 bay filter wheel vs 3 bay filter box:
相中Controller SW is NOT ASI Air, with very limited functionality.
相中USB port cannot be used for external USB drive.( 50 of 64GB eMMC internal memory)
6000 mah battery
看起來好像 值USD 1,600一樣
有如銷售一架單車，但放上一輛超跑相片作比較
但宣傳片視場是1/4 太陽或更小. 很多時用家看到照片出就馬上zoom大才能看清楚。bilibili
photo review, all photos are after stacking:
APO但chromatic aberration 算ok, 但總是有點 halo/flare
2.37 arcsec / pix
background noise 明顯, grayscale 一般 , 有black and white stripes
dumbbell nebula:
colour/gamma: washed out/dull. RGB中，R偏小, G偏多. 沒做 flat dark frame calibration?
actual observed by binary star, resolution is only 10~12 arcsec ( vs dawes limit of 2.32 arcsec), due to 2 internal diagonal mirrors.
Contrast is reduced due to the 2 diagonal prism mirrors, just like the porro prism binoculars :
Camera module(IMX462):
SAC9S-462LVDS-131650
M42:
Seestar: Focus error? Tracking error?
Redcat , ASI183
Vaonis vespera: 1.5h
conclusion:
will be happy if you use it for EAA, but turns away serious astrophoto.
The automation takes away chance to learn the basics of setting up a telescope, polar alignment and other skills. It's arguable if this is good way to introduce beginners to Astronomy, learn and grow.
Redcat 51, ASI071, Optolong L-Enhance, 4 hours exposure:
The mobile app is pretty complete and easy-to-use for novice
Limited 10 seconds exposure max., Noticeable field rotation trails (1)
Noticeable star trails at zenith, even for 10 s
Optical test review:
No official spot diagram published, but expect to be same or worse than zwo FF65, which has a spot of 10um in center
Optics test using aberration inspector shows trefoil astig,
FWHM is 1.8 to 2.x pix average in center
Embedded UV/IR-cut filter cut short the blue spectrum.
Slight tilting.
呢個新市場係zwo最想要penetrate。其他大品牌如Celestron, Vixen, Skywatcher 等都沒有積極備戰。
對於普通人來說, 跟本沒聽過Zwo，沒有知名度 。所以今次Zwo不惜成本想打入去這新市場。比起其他已有對手existing competitor 暫時是最有潛質
All in all, The market growth for such portable all-in-one "smart" products has no formidable competitor to Zwo, this market is relatively unexploited and unlimited growth.
For post procesed pictures, can look quite eye catching.
Well all magicians can pull rabbits out of the magic hat, and well versed magicians can pull more.
Reference
seestar owner FB
Waloszekz vespera vs eVscope
DIY with AZ GTi
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