Original BJ scope can it be saved?

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Richard South Africa
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Original BJ scope can it be saved?

#1

Post by Richard »


I think this is the proper BJ scope that most fear , I have never used one where the corrector is the front lens
This one the front lens is broken , can one still get replacements and is it worthwhile fixing it , is it any better than say a similar SCT or Mak ?
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BJ scope (2).jpg
Reflectors GSO 200 Dobs
Refractors None
SCT C5 on a SLT mount
Mak 150 Bosma on a EQ5
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Bigzmey United States of America
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Re: Original BJ scope can it be saved?

#2

Post by Bigzmey »


Corrector replacement will be impossible to find. Even for common SCT models, because it is the first thing which breaks and from what I hear vendors don't sell corrector replacements.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
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Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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Richard South Africa
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Re: Original BJ scope can it be saved?

#3

Post by Richard »


Thanks I thought so can one perhaps place a barlow /corrector in the focus tube , like all the other new BJ scopes?
Reflectors GSO 200 Dobs
Refractors None
SCT C5 on a SLT mount
Mak 150 Bosma on a EQ5
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Re: Original BJ scope can it be saved?

#4

Post by Bigzmey »


Richard wrote: Thu Aug 03, 2023 5:00 am Thanks I thought so can one perhaps place a barlow /corrector in the focus tube , like all the other new BJ scopes?
Let's say it works. You will still need to install spider or some other means to hold the secondary mirror in place.
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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Re: Original BJ scope can it be saved?

#5

Post by Richard »


Bigzmey wrote: Mon Aug 07, 2023 4:45 pm
Richard wrote: Thu Aug 03, 2023 5:00 am Thanks I thought so can one perhaps place a barlow /corrector in the focus tube , like all the other new BJ scopes?
Let's say it works. You will still need to install spider or some other means to hold the secondary mirror in place.
Oka someone just sent me that picture so have not actually seen the scope , but yes forgot about that , thanks scope is therefore of virtually 0 value and cant be saved , pity this is one of the few scopes that I have never used or looked thru
Reflectors GSO 200 Dobs
Refractors None
SCT C5 on a SLT mount
Mak 150 Bosma on a EQ5
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Lady Fraktor Slovakia
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Re: Original BJ scope can it be saved?

#6

Post by Lady Fraktor »


I may be wrong but looking online it seems the glass plate is not a actual corrector but plate glass to hold the secondary.
Making a single stalk to hold the secondary may work if that is the case.
Is there a doublet lens in the focuser tube?
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See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
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