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Showing most liked content since 10/10/17 in all areas

  1. 8 points
    Sheila

    Out in the field at SGL

    Quick process of 4 hours Ha data from last night at SGL star party. Hope the wind does not get too bad here as my scope is still out there hoping for more clear skies tonight
  2. 5 points
    Graham

    M76 in Tri band

    Taken last night through the murk and gloom. I hour each of HA , OIII and SII at 600 second subs. Captured and stacked in Maxim Combined in PS 6
  3. 4 points
    Graham

    Solar from today 15.10.2017

    Had a great day's sun bothering today. The seeing was bloody awful as the old girl was boiling away like a demented saucepan. This was the best I could manage out of the dozens of AVI's I took. Usual set up of double stacked Lunt and the Point Grey. Stacked in Registax 5 False colour and touch up in PS 6. Click on image a few times to get to full res.
  4. 3 points
    BAZ

    A bit of Dob Modding.

    After seeing Doc's post about rotary encoders the other day I decided to try and put one back on my Dob. It did have a older version of this and unfortunately this had errors that built up by turning it backwards and forwards. So it got taken off. I ordered this yesterday and it turned up today, so at the weekend I will try fitting this to my Dob and see how I get on with it. https://www.machine-dro.co.uk/rotary-angle-encoder-and-remote-display-with-a-6mm-diameter-shaft.html
  5. 3 points
    BAZ

    A bit of Dob Modding.

    Jesus, If I'd known it would be this much bother I wouldn't have started. But now it's done and the encoder works a treat. Only took twenty five hours! This morning I set about the mount and have moved the whole scope up 30mm, this is so the scope can swing back to vertical in the rocker box and now clears the encoder unit in the base. I had to make a platform which is bolted to the Telrad bracket, so that the incoming data cable, a new 2 metre long one, doesn't have a kink or bend in it where the plug meets the digital display unit. You can also see the original holes in the mount where the scope handles and the added bearing units were situated. I'll have to get something to fill these so the board doesn't turn to Weetabix. You can see from the picture, how low the encoder is mounted, it's literally as low as I could get it. But now I theoretically have a readout accurate to a tenth of a degree.
  6. 3 points
    philjay

    M42 just playing

    After a couple of aborted attempts at imaging from the US and Spain this week I was a bit disappointed asI wanted to try some LRGB but gremlins and weather got in the way. I was sat on the settee this afters and thought I would take a look at the weather in Aus, and great stuff, the Tak106 (scope T12) was free and the weather was good so I shot as much as I dared before sunrise at Sidings Springs. This is 8 minutes, yes 8 minutes! 2 mins L, 2 R, 2G and 2B. I shot more Luminence but clouds got in the way. I was gob smacked at the amount of photons that this set up can grab in the dark unpolluted skies down there. Not much of a fancy picture but it was a good practice for my LRGB combining in Maxim. Oh and it is a massive crop as this set up has a big FOV.
  7. 3 points
    Graham

    Solar from this morning 14.10.2017

    Managed to get a few AVI's in this morning before the clouds rolled back in. Usual kit and method.
  8. 3 points
    Ibbo

    Sol 12-10-2017 Ha

  9. 3 points
    Tweedledee

    IAS Show 2017

    I'm going Friday. Got a specific and slightly extravagant purchase in mind, but will hopefully see sense and chicken out in the end.
  10. 3 points
    Smithysteve

    Binocular comet

    Current location...
  11. 2 points
    Perkil8r

    Eddie's Coffin

    I have for a long time been transporting the ED80 wrapped in a duvet. Time for a change! Searching through my extensive stockpile of odds and ends of ply I found a likely candidate piece of 2 x 4ft 3/4 ply. So I ripped it down with the circular whirling wheel of death into strips to make the sides and ends. A piece of 1/4 ply forms the base and is glued and pinned on. This will not be load bearing when complete, it is just there to stop things falling out of the bottom and to keep the whole thing enclosed. Another piece of 1/4 will form the lid top. I have a deadline of making it functional by the end of this week as I am off away for a couple of nights with the rig. I have some over centre latches in my collection of "precious items" as well as a pair of sturdy handles. A length of piano hinge will be the only purchase required. So far I have the sides and ends fixed to the bottom. Tomorrow comes the chopping off of the top 3 inches to form the lid and also the cradle for inside to hold the ED80 secure. I do intend making a couple of lift out trays for odds and ends, a bahtinov mask retention device and filter rack in the voids left over in the box. It is also the first time I have had proper need to use the mallet I made out of firewood earlier in the year. P.s. The man cave is usually much tidier! It's giving me shivers looking at the mess lately.
  12. 2 points
    Bino-viewer

    Sol 16.10.17 Hydrogen iPhone

    Would this pass as an acceptable solar image.....? I can pretend its a HA Solar pic, even though its not.... Camera iPhone 8+ taken 12:20hrs near Liverpool The 'Red sun' i'm told was caused by a mixture of Saharan dust, and Iberian wildfire smoke, carried along with Ophelia's winds. It looked quite striking anyway, like a midday sunset.
  13. 2 points
    Bino-viewer

    IAS Show 2017

    Astrofest is a great show Richard (usually the first weekend in February) They're were not so many vendors there this year and i thought this years IAS was much better in that regard. Its also very busy, and the venue is a bit too small for it, and feels cramped and at times claustrophobic. I know : i've been to the last 11 Astrofests. What it does have is an excellent theatre and truly world class speakers. You'll find NASA and ESA people lecturing there as well. Highlights for me over the years.... Meeting and chatting with Al Nagler (Tele-vue CEO) I've seen Patrick Moore, Brian Cox, Chris Lintott, John Zarneki, Stephen O'Mara, Lucie Green all lecturing as well as the one and only Allan Chapman, who to me, is the best speaker of them all. You simply have to go.
  14. 2 points
    BAZ

    ISS Pass.

    Heads up for anyone wanting to take an image or just see the ISS. There's a blazing pass on the 20.10.17 at 18.35, it's predicted to be mag -3.7, one of the brightest I have seen. See below for details. Click on the date and it shows it's track across the sky. http://www.heavens-above.com/?lat=0&lng=0&loc=Unspecified&alt=0&tz=UCT
  15. 2 points
    Doc

    My Alt/Az Mount build diary

    I was thinking about encoders and it turns out there is not enough room for two of the machine DRO encoders inside the mount. So I decided to have one on the azimuth and a normal wixey on the altitude. The next problem is securing the 6mm shaft of the encoder into the azimuth axis. I came up with this idea, a plastic "D" shaft insert into the end of the azimuth shaft. Well you try to find one, what I did was buy a potentiometer and was going to glue that into then of the shaft. I ordered the following: http://www.ebay.co.uk/itm/4pc-D-Shaft-6mm-Stereo-Audio-Rotary-Switch-Potentiometer-Aluminum-Knob-13mmx10mm/290692264897?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 It turned out the outside diameter was 11.9mm, my thread on the azimuth shaft was M12 so not enough spare meat after I drilled 11.9mm. So armed with a hacksaw I removed the plastic insert. Now I needed to drill 8.7mm and superglue the insert in. Perfect fit and hopefully the encoder shaft will be exactly on axis with the azimuth shaft.
  16. 2 points
    Perkil8r

    Wip M27 05/10/2017

    After struggling with guiding the other night I have swapped to PHD2 and had a quick 30mins of O3 data tonight. Stacked those badly on Maxim, then spun them all through photoshop with a 5 min sub in S2 from the other week just to see what I've got so far. Cropped a lot to avoid the bad bits due to incorrect alignment and lack of calibration. It's just a quick test to see how it's coming along.
  17. 2 points
    Smithysteve

    Asteroid at 27000 miles!

    Happening tonight! Size of a house! quote from site; On October 12th, 2017, around 05h 42min UT, a small piece of rock, which dimensions range from 10 to 30 m, will pass at approximately 51 200 km from Earth surface. Shining as a fast moving +12,8 magnitude point, it will be observable in most amateur instruments, providing they know where to observe! https://www.imo.net/house-sized-asteroid-2012-tc4-coming-close-to-earth-tonight/
  18. 2 points
    BAZ

    Paul Money, Triumphs of Voyager part two

    I attended the IDAS meeting tonight to see Mr Paul Money with his second part of the Voyager talk. A brilliant talk, in two halves with an intermission no less and with a brief synopsis of the first part so everyone was up to speed. Some stunning images were shown of the planets that the two craft visited and there were some of Jupiter that some chap had taken the original Raw data and processed using modern techniques, absolutely mind blowing. Apparently the data is knocking about somewhere, so anyone can have a crack at it. I purchased Paul's yearly book, "Nightscenes" for 2018 and that will take pride of place in the toilet on the bookshelf. Great to catch up with the Ilkeston chaps, thank you for an enjoyable and informative evening.
  19. 2 points
    Doc

    My Alt/Az Mount build diary

    I've used one of my old Losmandy dovetail saddles today and drilled 4 mounting holes to make it extra secure. Clamped it onto the altitude disc and drilled through so I knew it was straight and centered. Then I mounted the scope and.... Well I'm bloody impressed, it's smooth and rock solid. I can adjust it so the scope doesn't droop while I'm using heavy and light eyepieces, the scope stays put in the same position while changing eyepieces. The azimuth axis is very smooth and so easy to move. I'm still not happy the shafts being made out of aluminium so I'm going to change them to stainless steel and I need a handle to move it around but I'm well pleased so far. Here's a few photo's.
  20. 1 point
    MPOLE

    Waning Crescent 6.4%

    A quick spur of the moment capture at 06:50 UTC. Quite noisy but it was pretty light by that time. ED80 and Point Grey Blackfly.
  21. 1 point
    Ron Clarke

    Sol 16.10.17 Hydrogen iPhone

    Here's mine...
  22. 1 point
    Rusty Strings

    A bit of Dob Modding.

    Good job mate.
  23. 1 point
    8472

    My first attempt at imaging - M31

    Bought my 200p Dob, diy equatorial platform, a newly aquired dslr (an unmodded Canon 450d) and various other gubbins along to the Belper meet on 21/09/17, to attempt some rough and ready imaging. I'm well aware these are far from the ideal tools for the job, but regardless, I had a major itch i needed to scratch! First things first was to take some "flats" near the horizon before the sun set. As a photographic luddite (photography is largely a mystery to me) I set iso to 1600 and exposure length to 6 seconds for the night (not sure my eq platform will permit subs >20 seconds). Next was to polar align and level my platform and Dob. Then connect the dslr and focus setup with my diy Bahtinov mask. Next came the "darks". All taken with the same settings as above, but with the scope cover on. My main subject of the night, was M31. So all in all I took 40 flats, 40 darks and 189(?) lights. All at 6s exp, Iso 1600. Thanks to the dew heater batteries in my telrad going flat, finding my subjects were trickier than they should have been. As a consequence, my other dso images (m51, m57 and m13) never materialized. Better learn to walk before I run, as they say. So after some post processing with deep sky stacker (again with my prior experience of this stuff being virtually non-existent) i came up with this ropey effort. Any opinions on how I can improve much appreciated!
  24. 1 point
    Sunny Phil

    Out in the field at SGL

    LIke, like and double like!!!
  25. 1 point
    Tweedledee

    A bit of Dob Modding.

    A lot of work, but it looks like you have done a grand job. It should be well worth the effort when you're using it.
  26. 1 point
    Allan the Plumber

    Out in the field at SGL

    Only about 30 miles (as crow flies ) from you Sheila west edge of Brecon Beacons and yes it was windy last night looks like you got some good data there . Managed about the same myself last night great dark skies here now nothing till next week!!! dam this weather
  27. 1 point
    Sunny Phil

    My first attempt at imaging - M31

    For a first attempt, it's <expletive> good. I would tidy up a little bit after stacking using GIMP, like Photoshop only free. You'll never get it quite right and you spend years getting that little bit closer. I do a lot with a DSLR on its own. Intervalometers are great.
  28. 1 point
    Sunny Phil

    Pegasus

    Usual technique with 30 light and 18 dark frames.
  29. 1 point
    Perkil8r

    Really Awful Jokes

    Orion's belt is a big waist of space. Sorry, terrible joke, only 3 stars...
  30. 1 point
    Graham

    Out in the field at SGL

    That's rather phallic Sheila. Is that a close up on the Heart Neb or somewhere else. Awesome detail
  31. 1 point
    Doc

    My Alt/Az Mount build diary

    Just weighed it and it is 13.9 Kg or 2.2 stone
  32. 1 point
    Doc

    M76 in Tri band

    Nice one Graham. It looks really small, is this a full frame image or a crop?
  33. 1 point
    BAZ

    M42 just playing

    That's a belter for 8 mins.
  34. 1 point
    Perkil8r

    Wip M27 05/10/2017

    A bad process but now 2hrs 40 of both Ha and O3. Also now rotated to correct orientation.
  35. 1 point
    Ron Clarke

    M42 just playing

    I wish I could see M42 for 8 minutes here, no chance!! Great image Phil!
  36. 1 point
    Graham

    M42 just playing

    That's awesome for so little data.
  37. 1 point
    BAZ

    A bit of Dob Modding.

    Well, that didn't go as planned. I have got the encoder mounted and working a treat, the problem is there is not enough clearance between the encoder and the bottom of the scope mirror cell. I have mounted it as low as I can get it, but the scope still hits it. So, do I give up on the encoder and angle gauge or modify the base and raise the height of the scope to clear the encoder. I will be making a new base at some point, so it will be a good place to start getting some basic measurements in. I'll have a think about it and have a look tomorrow now.
  38. 1 point
    Graham

    Really Awful Jokes

    I dont know but it did remind me of this one. A woman brought a very limp Cocker Spaniel to the veterinarian. As she lay her pet on the table, the vet pulled out his stethoscope and listened to the dog's chest. After a moment or two, the vet shook his head sadly and said, " I'm so sorry, your pet has passed away. " The distressed owner wailed " Are you sure ? " " Yes, I'm sure. The dog is dead " he replied. " How can you be so sure ", she protested. " I mean, you haven't done any testing on him or anything. He might just be in a coma or something. " The vet rolled his eyes, turned around and left the room. He returned a few moments later with a black Labrador Retriever. As the dog's owner looked on in amazement, the Labrador stood on his hind legs, put his front paws on the examination table and sniffed the dead Cocker from top to bottom. He then looked at the vet with sad eyes and shook his head. The vet petted the Labrador Retriever, took him out of the room, and returned a few moments later with a beautiful cat. The cat jumped up on the table and also sniffed the limp Cocker from head to tail and back again. The cat sat back on its haunches, shook his head, meowed softly, jumped down and strolled out of the room. The vet looked at the woman and said, " I'm sorry, but as I said, your dog is most definitely, 100% certifiably, dead. " Then the vet turned to his computer terminal, hit a few keys, and produced a bill, which he handed to the woman. The dog's owner, still in shock, took the bill. " £250 " she cried. " £250 just to tell me my dog is dead " The vet shrugged. "I'm sorry. If you'd taken my word for it, the bill would have been £20. But with the Lab Report and the Cat Scan, it all adds up."
  39. 1 point
    Tweedledee

    Sol 12-10-2017 Ha

    Yes, that is looking interesting.
  40. 1 point
    Graham

    Power hub

    Spot on. It actually steps it up to 30 volts for the motor's.
  41. 1 point
    Smithysteve

    A bit of Dob Modding.

    Sounds interesting. Will be be following this one... I used to use the ‘spring’ flexible coupling for encoders, which allows for a bit of movement between the shafts... this sort of thing... https://www.amazon.co.uk/sourcingmap®-Coupling-Diameter-Aluminum-Connector/dp/B06X9YLTKD/ref=sr_1_1?ie=UTF8&qid=1507758452&sr=8-1&keywords=Encoder+spring+connector cheers!
  42. 1 point
    Graham

    Power hub

    You will not need a separate supply for the mount. It is designed to run at that voltage. I run my entire obs on a maplins 13. 5 volt, 5 amp continuous 8 amp surge regulated supply.
  43. 1 point
    Smithysteve

    Power hub

    Hi David, the reason I asked for distances and 12vdc cable size (csa) to your pier was to do with volts drop which increases with cable resistance, distance and load. You can lose voltage over longer distances, but the distance of 3m shed to pillar will be negligible volts drop in your case, especially if you use cable with a minimum of 2.5mm csa. (But the bigger the better!). Regulated 12vdc supplies will not affect USB cables or network cables etc, only alternating (ac) supplies create electromagnetic waves that can create inductive type problems. If you can get shielded usb, or network cables then that would be even better though.
  44. 1 point
    Ron Clarke

    Power hub

    I have used a 7amp 13.8v DC regulated power supply for the last 4 years without a problem. HEQ5 pro, Camera and 2 dew heaters, no problem.. Cheers Ron
  45. 1 point
    Smithysteve

    Power hub

    Just a few queries & questions David.. For safety and potential probs, avoid a 230vac feed to an outside pier, and especially do not run a 230vac feed in the same conduit as a 12vdc feed cable unless they are shielded from each other... induction between cables can take place... you can always run an extension cable out if 230vac is required on the odd occasion. You also want to keep the dc voltage as close to the limitation set by the equipment you are feeding. Go too high and you could damage stuff, going too low could cause stuff to fail... e.g. A Synscan etc, will only tolerate a certain voltage reduction... Or increase. 13.8vdc seems a tad on the high side... 1) How long will the 12vdc feed cable be in metres and what size are the wires in your intended feed cable? (e.g. 2.5mm, 4mm, 6mm etc?) 2) Have you estimated the load at the pier end? In amps? If you plan to use dew protection heaters in the future then load will be significantly increased...
  46. 1 point
    Orion

    IAS Show 2017

    Still in North East. Might get back to Midlands in time for a day there. Maybe Friday or Saturday, or the day in between
  47. 1 point
    Doc

    My Alt/Az Mount build diary

    Thanks John glad you like it. Even those won't fit Rob. What I'm going to do is have one of wixey on the azimuth, and place the altitude on the dovetail bar like I have always done.
  48. 1 point
    Tweedledee

    Binocular comet

    This new bright comet is worth checking out with binoculars and should be very easy to image... http://earthsky.org/astronomy-essentials/binocular-comet-c2017-o1-asassn1-how-to-see-charts
  49. 1 point
    Smithysteve

    Autumn leaves

    Sounds like the walk may be that long, you will need to take some cake with you for lunch! 🎂😀👍
  50. 1 point
    Doc

    How to protect your secondary mirror

    A great way to protect your secondary mirror. It's large vitamin bottle from a health shop.
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