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Posts posted by Mr TamiyaCowboy
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if this is the case Ronin.
i have researched the scope, took a long time, but it uses a 114mm spherical mirror.
and inside the focuser tube itself is a third correcting/barlow lens.
the focal length of the tube is the same size of a skyhawk 114mm F500.
yet my scope with the corrector gives a f1000 focal length.
heres my idea.... dump the main mirror, and replace this with a skyhawk 114mm @ f500
parabolic , cut out/off he corrector/barlow in the focuser tube. and the scope is converted to what it really should have been
a short focal length fast newton ( not a slow f8 long FAKED 1000mm focal length monster)
problem is i made the biggest mistake buying this first telescope , but dont want to make any more mistakes and extra costs
converting it to a decent scope, ( cant sell it on knowing its not any good for anything/one)
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i own the skywatcher 1141 catadioptric short tube newton.
i know it is not the best of telescopes having a spherical mirror, but it had been doing the job.
The telescope has been used around FIVE times in two years of ownership from new.
scope has been moved twice, and not been bashed around, scope has been dust free
and looked after. HAS NOT BEEN USED OUTSIDE !!!
So there i am making a focus mask. i had to measure up the scopes tube end.
while doing this, i notice my secondary mirror has a white/fuzzy like appearance around the edge.
a bit like when superglue hits plastic it turns it that off white hazy look. iam seeing this on my secondary mirror
and i mean a lot of it.
so i thought hey maybe this is a reflection of the main mirror, so face in the end of scope time to check main mirror. and GUESS
WHAT, the exact same fuzzy white haze is also around the edge of my main mirror to. i have also noticed a very unusual
rainbow color hue over my mirror ( akin to heavy fuel oil ontop of water ).
so the scope is what you could still call brand new, its never been outside in damp cold weather.
been dust covered and kept clean and dust free. my views via eyepiece are not crisp and clear,
more a dirty hazy fog like view.
IS my scope mirror knackered, if so how do i send it back to skywatcher as faulty
the coating should not be harmed so why is it showing damage after minimal use and dry storage,
why have i got this superglue like substance creaping over my mirrors.
I am now left without a scope and stuck with just my camera lenses. and am coming to the point, where
i should just take a hammer to the darn thing in anger, its cost me £120 for the scope, i have seen jupiter once
taken around 16 solar images ( using correct filtering and safety reqs) in the space of two years,
yet the mirror has aged around 200 years.
so any ideas what is going on, and how i RMA this whole scope back to skywatcher as unfit for purpose. ?
(ps, am unsure how i can photograph said mirrors to show the damage and problem i have)
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Hello gina
i followed your DSLR Homebrew thread and found it very interesting.
i have just stumbled upon this thread and its sounds wicked what you are doing.
i also have a couple questions,
i have a Multiwii flight controller. ( it is a arduino with a 10 DOF module ( 3 axis accel - 3 axis gyro, barometer, 3 axis magnetic compass )
this also sends pwm to four electronic speed controllers. these are very small 45mm x45mm squared
its an ATmega 328 , as you can see its just a small arduinio.
without a reset button. this model does not have an I2C pin out, but using the ciruit on the top left
you can gain I2C ( gps module ublox is what we tend to run here) at either 3.5v or 5v using the curcuit
just below it.
now i was thinking of using this to control a couple DC motors via PWM as my RA/DEC.
i then thought about using the baro as a hi/low pressure gauge, and the mag compass to be used with the
RA/DEC ( mixing it to give an alt dec reading ).
as you have and are tinkering with the same sort of idea, just not driving a scope mount with it.
what are your opinions on my idea, and have think about using breakout boards but dumped the idea for reasons ?
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Grrr...I'm not sure why it's still giving me problems! Sorry, but I really don't know anyone who knows about this stuff. Hmm....
hello swtbliss8.
i notice you wear glasses, do you have a friend or relative that has 20/20 vision.
have a none spec wearer look through the eye piece and ask them if its blurred.
i focused venus in my eyepiece i am also a none spec wearer , it was a lovely crescant shape just as it should be.
i then let my father look, he wears glasses to like yourself, when i asked him what he saw, he told me a blue'ish blob.
the scope is producing one focal plane, but your glasses convert it to another.
i think your problem does not lay with any technical stuff on/with scope, its because of the eye relief of the eyepieces.
and your need to wear glasses to. the combination is not allowing you to focus fully.
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got myself a maplins 3-1 ( blue label ) jumpstarter.
works fine, but am going to take the jumpleads off
and mount a 4x cigar adaptor to the case,
an internal fuse to the adapter will then give me 5x 12v power outlets.
i also pulled the rear case of my pack to check what type of cell was mounted.
i can say they have now changed the cell units to a spiral wound battery.
mine is a 9ah 12v spiral wind cell pack ( yellow in color) and nothing like the standard gray /black rectangle packs.
after charging i read 13.5v on the meter.
am now looking around to find a decent marine 12v 21ah pack to fit inside the maplin case.
other places to find these 12v low range ah cells are from those children's ride on toys.
powerwheels, jeeps and the likes run on 12v low ah packs
114mm Mirror Advice /damage repair
in Getting Started Equipment Help and Advice
Posted
well my choice is narrowed down.
either a ST80 or a Orion 80. both around the same price as each other.
one a clone of the other it looks like.
it is a massive drop in apeture for me, i must be stupid or something, people want
bigger light buckets and im going for smaller.
short tube and light weight is my requirement, i cannot be lugging around large scopes
doctors orders. and the above two are the only ones i could see that have a £100 price tag.
either way They HAVE to be better than the scope i have now ( hey they dont have a fake corrector plate )
i have an EQ-1 with single ra drive motor, but i also own a fully working Goto merlin mount unit to.
my imaging gear consist of a canon 350D for prime and a lifecam modded for planetary work.
main targets of interest , Clusters , nebula , DSO, comets and large impacters.
any ideas for a suitable'ish scope would be greatfully taken in and wrote on my beermat
ideas pad