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cotterless45

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cotterless45 last won the day on September 7

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About cotterless45

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    " Look up at the stars and not down at your feet."

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    Male
  • Interests
    gardening.travelling.
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    Swadlincote,Derbyshire
  1. Theta Aurigae. (SAO 58636) Easy to find by eye , just point some power at it. It's a multiple group with a visual c companion. On paper this 4" split should be straightforward and not ticklish. It's very dependant on seeing and a good sky, good glass helps. The main star is 75 times brighter than the companion ! Last time out , it was sparklingly easy trying out a 120ed. Had a right grin catching it at low magnification. Let's get the details first. It's 175 light years away . 285 times brighter and a radius x5.4 of Sol.it has a magnetic field a thousand times stronger than here. The companion is 185 AU away and has a 1200 year orbit. William Herschel initially caught the wide companion , but not the close B. I've always had a challenging time due to the glare of the main star. For those trying , "try harder !" This glare can hide the B. It's just a delightful view when it cracks open. It's easier than Psi Cassiopeiae.
  2. cotterless45

    Equinox 120 gripped , sorted !

    I'll get my coat !
  3. cotterless45

    Equinox 120 gripped , sorted !

    Read reports, often the hype is just that. Not with the 120ed , we were both blown away with the views. The sky was not even at it's best with light pollution and humidity kicking around. It was the clarity of views that was stunning. Going to get the t-shirt , first ! old
  4. Patbloke arrived early with a huge black soft case . Opening it up and pointing the objective my way ( woooo ! Coating !) was a gorgeous Equinox 120, 900mm f7.5 ed. Shortest scope I was to use for a few years ! The forecast was excellent , the sky was just cloud with gaps. It was a cinch to mount the scope onto the mount , just beautifully balanced . I put on my 2" WO diagonal and awaited the 10.00 forecast clear skies. Big gaps appeared, the cloud stopping light pollution from hitting the sky , real satin black gaps. Saturn passed the big tree , but a low Mars appeared with the promised clear sky. I was just blown away by the clarity and purity of the views, diffraction discs were beautiful coloured marbles easily opening even faint binaries. It was just a delight to see clusters , NGC 6811 "hole in the cluster" was spectacular . We took NGC 7789 ("Caroline's rose" ) we took up to x100 to fill the view with dark lanes and dusty groups. Mars showed monstrous wobbling, but we did manage the dark areas and I got the ice cap. We later caught Comet 21P Giacobini -Zinner dipping to the side of Auriga. Nothing phased the views , we tested three eyepiece cases full . 42mm 2" LVW gave a stunning view of the double cluster, M31 and the whole of Pleiades, something which I'd not seen in a scope. Most captivating were the colours , high magnification bringing them out . We reached x400 without breaking up the view. This helped opening up tight binaries , really amazing. From 62 to 82 degree eps and the views kept coming . The Garnet star currently bright, was stunning. No flare , no glare and just pure views to linger on. Theta Aurigae ( Bogardus ) had always been difficult , but even at low mag , I could clearly pick out the companion and third element. A 6mm circle T gave a stunning view. Problems that I had previously , I put down to too much aperture there and getting too much light from primary stars. This is where 120 wins out, no slouch for deep sky , we got the Eastern Veil and a core in NGC 7331. Just delightful. Oh , the standard focuser and silly tightening ring are just awful. Get a Moonlite on there ! Bit of chill and humidity began to kick in. I asked if he could leave the scope for further testing , a definite no ! I don't think that I can recall a better session enjoying some pretty demanding targets. When I'm past hoisting up 11 kgs of C6r, 120 ed is going to be arriving , wooop woop! Clear skies ! Old Nick.
  5. cotterless45

    Rainy day Report

    Excellent report ! Been following 21p all the way down. Some class targets there ! Nick.
  6. cotterless45

    No wonder this sold quickly!!

    Queer stuff often appears , saw a "Dobsonion " on eBay. That should bring tears to the eyes ! old Nick.
  7. cotterless45

    Miram.

    That's particularly neat ! I get a lot of inspiration from here , some great background stories, https://bestdoubles.wordpress.com/?s=Miram Folk chasing after faint fuzzy things don't know what they're missing ! old Nick.
  8. This area is totally absorbing , just forget everything and drift away ! This pastime is one probably unique in putting the observer into the quiet depths of calm space. Heads up ! Some stunning multiples here. Σ2987 (SAO 52795) gives a wonderfully delicate companion. ΟΣΣ244 (SAO 52912) a triple ,has fast proper motion . Find this with ΟΣ493. 8 Andromedae (Bu 717) (SAO 52871) an orange star with multiple companions to F. Catch both ES 2725 (SAO 52899) and ARY 3 together. Almach is just glorious, typically gold and blue , I caught it under poor skies as an orange glow with a green companion. W. Herschel called it a "most beautiful object". Easy to pick out the fine companion. 79 Andromedae (SAO 36832) gives white and pale blue. A lovely sight. 59 (SAO 55331) gives a lovely view in circular star field. Σ3050 (SAO 73656) gives twins at 2.5", a clear and beautiful sight. Alpheratz is 200 times brighter than Sol. It's companion is the highest mercury manganese star known. Σ79 ( 1h.00.1 +44 43') gives yellow and violet pair. Σ162 (01h.50.25 +47 58' ) gives a lovely triple with a clear B at 1.9". Σ249 (SAO 37971) is some 38 times brighter than a Sol. Requiring some aperture and rock steady seeing , 36 Andromedae is hard to beat . First caught it two years ago with Patbloke at 1.1" . It's opened up to 1.2". Clear skies ! Nick.
  9. cotterless45

    Clear sky and the beast !

    "What scope are you using mostly these days? Dob" yo Stu, still mainly the yard cannon. The Dob's waiting for Dumfries and Galloway , unfortunately same week as SGL Hereford. Would have loved to have gone for the crack, old Nick.
  10. cotterless45

    Super proms today, 7/9/18.

    Nice early blue sky . A lovely group of hefty proms. Worth watching out over the next few hopefully clear days, Nick.
  11. Eta Persei, top of Perseus. Spent many long moments whisked away by gold and blue. It's a wonderful group of stars. It's quite challenging to pick companions out from the glow. Don't go with the obvious binary , there's many delicate ones to pick out here. Last night was ideal for transparency , nice wide view will do fine, under Clear Skies ! Nick.
  12. cotterless45

    Clear sky and the beast !

    Just wonderfully clear , at the zenith more and more stars popped out. But the seeing , OH DEAR ! probably worst this back end. I think over the houses folk had switched on the heating , bit chilly. Real wobbly time when you think there's something wrong with your eyes , scope , eyepieces or something ! Before midnight there was a huge crashing of foliage behind my screening hedge. I wasn't staying around to meet the beast and headed indoors for a cuppa. Just scanning around and the transparency gave great views. M76 showed its shape. A great glare of nebulosity from the Veil, a core from NGC 7331 and a stunning M31 group. Onto a bit of exotica, " Ghost of the Moon", NGC 6781 in Aquila ,lovely and bright with a UHC filter. Followed by , in Aquila , a diffuse NGC 6751 "Dandelion puffball" and another planetary NGC 6804. The "double cluster" gave a beautiful view against a dark background as did M2 and Graff's cluster IC 4756. A huge glowing M27 filled the view at x100. Have a look at the "hole cluster" , NGC 6811, a lovely ring with plenty star cloud action nearby. Waiting until Andromeda to rise high , the Milky Way was right across the sky , rare from the edge of town. Then off to Andromeda binaries. For a super x50 view, try Miram , gold and blue (eta Persei )top of Perseus, that's a mega multiple group. For cheery colour ,Almach is stunning. Last night's sky gave a ghostly glow producing orange and green. Clear Skies ! Nick.
  13. cotterless45

    Keystone cop

    Lovely report , both M11 and Graffs are beautiful views, Nick.
  14. cotterless45

    Surreal Accompaniment

    Great report , I find Mars to be shrinking ! Lovely views and the utter difficulty of finding targets in dark packed skies ! Nick.
  15. Lots of multiples , a very fast star and lots of heavy populated backgrounds. A favourite and overlooked area. Firstly just a word on magnitude. A numerical change of one magnitude equates to x2.51 difference in brightness. However this is exponential, so that two changes equate to 2.51 squared and three changes to 2.52 power of three. It's amazing to get these differences observing. Quick mention of Struve Σ and ΣΣ. ΟΣ are in the first 1845 survey of 32" or less, except for fainter than +9.5 up to 16" separation. The ΟΣΣ catalogue followed to give greater separations. 17 Lyrae (SAO 67835) is x2.2 sol diameters. 23 Aquilae (SAO 124487) gives a yellow and outstanding blue, some 22.3 Sol diam. 28 Aquilae (SAO 104722) is a pulsating variable at 3.6 diams. 31 Aquilae (SAO 104807) is the prize here . Very very fast proper moving. Herschel did not include it , it was just single in appearance. Catch Σ2547 (SAO 162847), Σ2545 (SAO 162843) and LV21 (SAO 162829) together. 57 Aquilae (SAO 143899)is beautifully bright. 56 Aquilae (SAO 143894) is a wide triple. π Aquilae (SAO 105282) is a well mentioned orange gem at 1.4", wonderful sight. Σ198 (SAO 125456) gives a lovely full field of view. Σ2644 (SAO 125566) is a beautiful sight. Σ2587 (SAO 125141), a very beautiful delicate B with a reddish A. 15 Aquilae (SAO 142996) gives a yellowish red. 5 Aquilae (SAO 142606) has a third element , which is challenging , but found on a darker night. ΟΣΣ176 (SAO 124028) was a delight to find the four elements. Σ2447 (SAO 143029) Σ2404 (SAO 104170) an orange giant. 11 Aquilae (SAO 104332), an eruptive variable, drawn twice to show a darker sky. Σ2426 (SAO 104332 ) red dwarf 4.4 Sol diameter. Σ2449 (SAO 124265), some 2.5 Sol diameter. Tarazed (γ), an orange giant would extend from here half way to Sol, some x2960 as bright. Eta (η) a dying star and brightest of the Cepheid variables? Altair, B at 192.3". Some 3400 times brighter than Sol, but with a surface of 5600k emitting visible light. Σ2590 (SAO 105355), very delicate companion in a full view. Σ2596 (SAO 105396), 2.0" split and a main star with x9.5 the Sun's energy. if aked to pick out. I'd go the last two here, 31 Aquila , Altair and Tarazed, under clear skies ! Nick.
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