Uranium235
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Everything posted by Uranium235
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Right, we've had some good weather.... but not much darkness to play with. However, Cygnus was high enough to do a bit more work last night. This is just a rough process (was pretty tired by end of session), and is just half the resolution of the finished item. I'll give it the proper U235 treatment later on and post in the imaging subforum - unless its clear again, in which case I might have a stab at grabbing some OIII (depending how high the moon is).
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Im guessing theyre for the secondary? They should be the same size thread (I think all SW are the same at the secondary support) so shouldnt be a problem. They will be going in the three little holes that surround the secondary holder centre screw (do not loosen that one unless you know what youre doing). Dont forget to remove the old screws first! Also, the telescope will need re-collimating once youve fitted them - but to reduce the upset to the secondary, its probably better to replace them one by one (ie: take one out, put the new one in & tighten it up, move on to the next).
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SHOW US YOUR NEWTS........
Uranium235 replied to laser_jock99's topic in Discussions - Scopes / Whole setups
The small, but mighty 130pds at work -
GCSE week.... I might be a bit busy. Tissues, damp sponges and sick buckets on standby!
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Nice image! It took me a couple of seasons to find that one as its slightly off the beaten track and doesnt appear in the handset (DWB catalogue). So you have to either use stellarium/CdC or bang its RA/DEC straight into the handset. Other wierd stuff here: http://www.elisanet.fi/jere.kahanpaa/astro/MACindex.html (lists bright/dark nebs by constellation... handy if youre doing a "whats on tonight" search)
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The 130pds army continues to grow.....
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Guiding tonite!!
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Short exposures are ok if your telescope is fast, the target is bright, and youre not expecting to go deep. For the harder stuff, long subs are quite unavoidable (moreso in narrowband) because if you have something that barely shows up in one 1200s sub, its not going to appear at all in a 300s sub (ie: as 4 x nothing is still nothing!)
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"ok" will be a bit of an understatement! You will be able to lift it (fully loaded) with one hand. Heh I see you wasted no time in getting it into your sig!
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More 130pds goodness..... (larger image & more info in deepsky section):
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A few extras, probably the last of the broadband as Im now switching back to narrowband (yayyy!)
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Blimey, youre going to have loads of space to play with then... if your chip backfocus is 13mm and the FW is 22mm, then you need a spacing of either 20-22.5mm from the T2 thread, or 22.5-25mm from the M48 thread. There's a chance it wont be a light imaging train, so you will have to tweak the focuser tension a bit to cope with it.
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Easy peasy... in fact it will be easier with your camera since your chip backfocus requirement is less than mine (yours is ~13mm, mine is 17.5mm). So you will probably need to make up about 15mm with extensions - assuming you have a short connection between your FW and camera. I'd imagine that after a few years you already have most of the bits required (have a rummage through your bits box). This is where a set of digital calipers are worth their weight in gold.
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Ahhh, ive seen the ad Somebody better move fast then! Sorry it didnt work out for you, im sure it will find a good home. However, for the imagers - I have another cheap and easy mod to *vastly* improve grip, stability, and remove drawtube tilt: http://stargazerslounge.com/topic/243409-skywatcher-focuser-ds-cigarette-packet-mod/ Did it last night, and it works a treat - all I need now are a few stars to test it on.
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Forgot to include this one, Twin Quasar QSO 0957+561 A/B - approximately 7.8 billion light years distant.
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Here we go again!.... another mosaic project started
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Thats interesting..... Perhaps it will be better at flattening if it slightly increases the FL (like the parcorr does), and a spacing of 75mm is pretty generous. Blimey..... just took a look outside to see what all the noise is..... its horizontal hail. That will be a fun trip back to the office!
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Or, at a pinch - you could borrow the one from your 150pds, its exactly the same M54 thread.
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Hmmm.... do you have a 2" barlow you can take apart and use? My 130 came with a compression ring too (you've probably got the same TS adaptor), I ended up ripping the brass ring out with a pair of pliers, then drilling a third hole for another thumbscrew.
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What part would that be? The 2" extension tube?
