Adjusting the SkyWatcher Crayford Focuser

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Lowjiber
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Adjusting the SkyWatcher Crayford Focuser

#1

Post by Lowjiber »


Since we're in the testing phase, I thought it might prove helpful to try a post with a couple of attachments in one of the sub-forums...

I have three Skywatcher telescopes (one 100mm & two 80mm). The SW focusers can be a little tricky to adjust, even to those accustomed to "regular" Crayford style focusers. I came across this piece when helping a friend in Florida a couple of years ago.

I have the entire article in PDF format, but can't attach it to the forum. If anyone needs it, please send a PM with your email address.

(Photos used with permission. Copyright: Tommy Nawratil – www.teleskop-austria.com)
The attachment SW Crayford Adjustments.jpg is no longer available
SW Crayford Adjustments.jpg
Last edited by Lowjiber on Tue May 07, 2019 2:14 pm, edited 3 times in total.
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#2

Post by Lowjiber »


Okay! I had two files that I attached, but only one showed up above. I'll post it here...
SW Crayford Adjustments 2.jpg
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#3

Post by Lowjiber »


I'm going to try one more time to attach both pics below...
The attachment SW Crayford Adjustments.jpg is no longer available
SW Crayford Adjustments.jpg
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#4

Post by Lowjiber »


It seems that the forum doesn't like two files placed in-line in the same thread. It's not a major issue, as one can simply make two separate posts (each with one pic).

I'm gonna try it one more time without trying to stack them myself, omitting a "Return" between the placement...
SW Crayford Adjustments.jpg
SW Crayford Adjustments 2.jpg
Last edited by Lowjiber on Tue May 07, 2019 2:22 pm, edited 4 times in total.
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#5

Post by Lowjiber »


Bingo!

By just letting the forum place them in-line without any spaces or return, they will be stacked as we like 'em.

Not a big deal, but something to remember for the future. 8-)
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#6

Post by Lady Fraktor »


Thank you for the write up John, hopefully the PDF upload is a minor fix to activate.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
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Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
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Re: Adjusting the SkyWatcher Crayford Focuser

#7

Post by Lowjiber »


Testing PDF upload as an attachment...
Adjusting the Skywatcher Focuser.pdf
(900.92 KiB) Downloaded 608 times
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#8

Post by Lowjiber »


Works great! Thank you, Gordon.
John (Urban Astronomer) Apertura AD10 Dob; XLT 150 Dob; XLT 120EQ; Lunt Solar 60 PT/B1200; ES AR102; SW Pro 100ED; 2 SW Pro 80ED's; 90mm Eq; WO Z-61; SW 90mm Virtuso Mak; 2 Orion ST-80's; Quark-C; Cams: Polemaster, ASI120MM-S, ASI174MM & ASI174MM-C
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Re: Adjusting the SkyWatcher Crayford Focuser

#9

Post by Gordon »


Lowjiber wrote: Sat May 11, 2019 11:06 am Works great! Thank you, Gordon.
Not a problem!
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 200 Quattro Imaging Newt, SeeStar S50 for EAA.
Mounts: Orion Atlas EQ-g mount & Skywatcher EQ5 Pro.
ZWO mini guider.
Image cameras: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC
Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm
Eyepieces: a few.
Primary software: Cartes du Ciel, N.I.N.A, StarTools V1.4.

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Re: Adjusting the SkyWatcher Crayford Focuser

#10

Post by John Baars »


Thanks for uploading!
I have had this manual on my computer and used it two times.
Very useful!
So owners of this focusser: Download it!!
Sooner or later you'll be thankful to have done so!
Thanks Lowjiber and Gordon!
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
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Re: Adjusting the SkyWatcher Crayford Focuser

#11

Post by NikkiT »


Thanks for the pdf,
I have recently bought an ED80 and was thinking that the focuser was a bit loose and feeling a little nervous about hanging a dslr from it.
I'll give this procedure a try!
Skywatcher ED80, Skywatcher EQM35 pro, Canon eos100d, second hand 10x50 binoculars (unknown brand, but they work great!)
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