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About cplee42

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    Star Forming

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    Bristol UK
  1. OK thanks for the advice on GPC so can I ask is it better to get the 1.25" nose piece and the smaller GPCs vs the 2" GPC which is double the price? I have a 2" nosepiece already and use this with my 17.5mms but adding another £200 for the occasional mag views vs £120 is a consideration. Will this markedly affect the view? I like the 2" nose partly because it grips nicely in the click lock diagonal but never quite sure if the view thru a 2" diagonal is very different with the bino vs a 1.25" nosepiece...
  2. I have upgraded my 8" SCT with the Baader 2" click lock diagonal and the Maxbright II Binoviewer with two Baader Morpheus 17.5mm eyepieces. Last night the views of Mars were excellent as where the star clusters (although, since I do not use a focal reducer, I mainly swam amongst them!). The Moon was excellent and, as a sketcher, it is so much easier to observe and draw with two eyes. I had no issues getting focus for my system. and so... Question 1: I would like to use the binoviewer at higher mag. I already have the Baader Hyperion 8mm and so I wonder if I have three choices and, if so, which is best? I could buy another Baader 8mm and so have high and low power eyepiece sets for swapping in and out... I could just add a GPC (say 1.7?) and stick with the 17.5 mm pair or I could get a 2" 2x Barlow and similarly stick with just the 17.5mm pair. The prices for these options are not too dissimilar (roughly) but I wonder which would be better for me optically? Question 2: Mars was very bright and so I sought to reduce this by using the only 2" filter I possess - the variable polarising filter I use for the Moon. I screwed this into the MB II nosepiece and inserted into the 2" diagonal. However the image appeared to have some ghosting and I could not really snap it into easy focus. Is there an optical effect here for splitting the polarised light between the two eyepieces and so confuses the brain vs mono viewing? How will this affect lunar work? To be honest the moon was so "dim" low down last night that I never had a realistic chance to see the polariser in action in the new set up. Thanks for any thoughts
  3. For those interested in a good read, today's UN/IAU Dark Skies conference looking at the impact of constellations and other night sky blights on dark skies for astronomy have led to a few reports on the background, the consequences and the mitigations under consideration. https://owncloud.iac.es/index.php/s/WcdR7Z8GeqfRWxG
  4. This will I am sure become a hot topic in the next few years. Currently 3000 satellites are active but this will rise to 20,000 in the next 5 years and prospective plans for 100,000 are now approved by International regulation teams. The professional astronomical world are currently assessing the impacts - it would seem that low LEO orbits like Starlink may be mag 7 problems in twilight periods but less prominent at later times. On the other hand OneWeb (owned no in part by UK Govt) will operate at high altitudes and so will remain visible for longer but their brightness may be less (being further away), around 8/9 mag. The professionals look for mitigation strategies (challenging if honest) but they are asking FAS to investigate how the amateurs are affected and at what point it becomes a problem. How effective will stacking be etc etc vs the number of trails etc etc? It might be a piece of work members of SGL might wish to contribute to in the coming years. The new concern will be radio astronomy and SKA but I imagine less of a nuisance than optical?
  5. and so after a long struggle with a Draper rubber wrench I did indeed have a piece of the CL still attached to the scope - if extraordinarily tightly. Now reassembled and cleaned up on both threads and the CL screws back on again in one smooth motion. Duh!
  6. I think I have my own answer - I think part of the Clicklock is screwed tight against the Nexstar and what I can see is the ring of part of the CL - a thin ring etc and its locked solid. No obvious way of twisting this off! Argghhh!
  7. Hi everyone, I have acquired a Nexstar 8SE for use with an AVX. I have had this for some time and it came attached with a 2" Baader Clicklock (CL) for insertion of my 2" Star Diagonal. This has been fine. I now discover the CL has been attached through tight screw down of its 6 grubber screws. However I have recently become interested in being able to unscrew the CL to insert a focal reducer. However to do this I must use an Allen key on all the grubbers to remove the CL. Not ideal. On taking off the CL I see a thin thread but the CL does not/cannot screw onto this. It "caps" it. Hence (I assume) the use of the grubscrews. I wonder now if I am missing a screw piece as I see frequent mentions of simply unscrewing the CL to place on a focal reducer and for the life of me I have no idea how such a thing would screw on to such a thin protrusion from the back. So I attach the image of my Nexstar 8SE and ask "am I missing a piece somewhere"? Thanks
  8. Thanks Shimrod. Do you screw your Clicklock onto the Edge or, like me, bolt down the grub screws? On the Nexstar 8SE there is hardly any thread on the back to screw on to..
  9. Can anyone explain why the ZWO monos are always more expensive than the same model in colour mode? Mass manufacturing?
  10. This is a dumb question - OK I know it but... I have an 8" SCT with 2" Clicklock directly attached to the back by the 6 grub screws. I use this to give strength to the binoviewer setup I normally use vs the standard visual back. Its rock solid. I don't use a reducer. However I am thinking about EEA and purchasing a ZWO camera for live viewing/stacking but still keen to be able to use my rig for binoviewing and not keen to keep detaching the click lock/grub screw combo ahead of an EEA session. Ideally I just want to insert a ZWO camera and sets of extn rings into/through the Clicklock, do my EEA and then perhaps remove the camera train and reattach my diagonal for visual binoviewing. Would this be possible when I read so much about careful judging of the ZWO back focusing measurements etc? Of course in my set up I also assume its not possible to insert a focal reducer into the picture? As I said - dumb question but...
  11. Bit of a newbie question on this ASIStudio and related. I simply want my 8" SCT to offer an evoscope like functionality ,so that I can augment visual observing from my site. I would like to use a mono zwo camera and "throw" the image to my iPad while it builds up some live stacking so that I can see the faint fuzzies a little clearer. I do not plan to then process the image offline. It's a visual tool. I understand ZWOStudio will allow that to happen and ZWOAir will control the scope but I cannot see Polaris from my garden. Currently I use StarSense and that is usually good enough for a night's observing. So, can I use StarSense to set up the scope then switch in ZWO camera into an eyepiece mode with link to ZWOAIR and use Studio to connect all this together for the "evoScope"-like imaging session? Sorry for the dumb misunderstanding this question might reveal!!
  12. Thanks Martin. What camera set up are you using? and how do you interface this to the scope? Your signature suggests you use a SXLodestar Guide Camera but is this the main one? I have looked up Jocular which I was not aware of so my learning curve is beginning!!
  13. For several years i have toured the sky from my back garden using 8” SCT And AVX mount plus various eyepieces and i still enjoy the challenges. However i am finding i have now seen most objects that are visually appealing and now find the remaining targets harder especially with encroaching sky glow around me. I could consider upgrading to a firmer mount and the 9.25” (i must set up and tear down my kit each time i use it so not keen on going to 11”SCT). I am therefore wondered if EEA could allow me to see more. Nebulas i can never see or more distinctive galaxies. I am not so bothered about capturing images and post processing so would like to set my scope up with relative simplicity and “see” the image build up on my ipad (preferably). I have seen some videos on ASILive and ASIAIR etc but it seems to require quite a bit of kit and fiddling with autoguiders etc. Would a ZWO like camera plus ASIAIR just do the job on the ipad? Would this work for planetary as well as deep sky? I have also seen reports about (Expensive) NV eyepieces but i cannot assess whether they too take me in the direction i seek... i have also seen the eVscope setup on line and to some extent that seems to move in my direction as a principle but i already have a decent scope set up and so look to augment rather than abandon. Thanks in advance for any advice.
  14. Thanks Stu. Likewise great job. I have been surprised not more people seem to have been out there that night to "make the run" vs say a Messier Marathon... especially with a comet around...
  15. Finally have had some time to post my observing session across late evening 1st Aug and early morning 2nd Aug at a remote dark site near Bristol. I am calling it my “Solar System Marathon” for want of a better name. Captured the following on my iphone against either 15x70 binos or my 8”SCT. Comet Neowise, Mercury, Venus, (Earth ), Moon, Mars, Jupiter, Saturn, Uranus, Neptune, asteroid Ceres and Noctilucent Clouds before finally catching Sol at sunrise. Not a bad session at all! Pluto was never possible in my Scope so glad its not a Planet! Interesting where astronomy can take you on a single night when conditions permit...
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