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About ajohnson

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  • Interests
    Astronomy, Astro photography, Wildlife Photography, 4x4 Driving, Ornithology.
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    Shropshire, UK

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  1. Same Frac, new mount. trying out a new (to me) CEM120 mount, it was a nice day so popped the Evostar 150 that I usually use for visual onto the mount for a bit of white light solar imaging, the heavy iOptron mount is overkill for this OTA, it will back on it's usual EQ5 shortly.
  2. I'm very interest in one of these especially at the price difference between the Lacerta and Lunt / Baader 2" version I realise the 1.25 Lunt is a decent price but I have a 6" scope and the recommendation is for the 2". How does the Lacerta handle heat over long observing periods ? (I know it's unlikely in the UK). Does anyone know if it would handle a few hours of outreach solar observing with a big (150 x 1200mm Evostar) refractor.
  3. My Esprit 80ED purchased about a year ago, my recently acquired Evostar 150 and ST80. The 80ED usually sits on my EQ6 with cameras, guiders other kit. The Evostar was being sold at a silly price and just had to join the family, the ST80, seen here on one of my Newts recently had a crayford focuser added, I would not have bothered but for a tenner (BNIB) from a car boot I couldn't just leave it there.
  4. For some reason the Esprit range sold in the UK does not come with a flattener (unlike the US). This is odd because without some form of spacer or using the diagonal a camera won't focus if connected in line. I did query this with FLO and they very nicely started to "bundle" the flatteners with a bit of a discount, I almost ordered the full bundle but then my phone pinged that an Esprit was available on ebay so I only bought the flattener from FLO in the end. I have to admit, it's a very solid bit of kit and makes using the Esprit a doddle, if using a 48mm T ring the adaptor includes a 2" filt
  5. I went through the same questions and decided on the triplet over the doublet for more or less the reasons you stipulate, it cost more but I'm not going to be sat here wondering about an upgrade in 12 - 18 months time, although I did consider a used Evostar 80ED as they seem to hold their prices pretty well so would be a lower risk. There are good reviews on the Evostar and Equinox ED80 and some nice photos produced by each one, in the end I went for the Esprit because as a triplet the overall picture contrast is meant to be better and virtually no Chromatic aberration, the Equinox and Evostar
  6. Thanks for the feedback guys. I had more or less decided that the wider field of view of the 80ED was going to be the winner and was just about to put an order in to FLO when my e-bay alerts went "ping" and a three month old Esprit 80ED was listed. I found the same scope on Gumtree, so rather than get in a bidding war on e-bay I put in an offer via Gumtree and picked it up Saturday, I suspect to the annoyance of those watching it on e-bay. So I am now the proud owner of an Esprit 80ED, the EQ5 mount it came with plus a few cheap eyepieces all for less than the price of a new one! Naturally eno
  7. OK I'm not exactly a beginner at AP but so far I have shied away from refractors, other than my trusted ST80 guide scope which has impressed me hugely. I have a few newts which do good jobs of imaging most things but at 1000mm have relatively narrow FOV with my APS-C camera (1 degrees 16' at the widest dimension if I've got the calculaton right for the Quattro 10S), they are also a bit of handful to travel with and the optics although OK for imaging are not so hot when you swap in an eyepiece (not that I do much visual observing with this scope). I'm at the point where I'm thinking my next sco
  8. Hi Tommo, The straight maths on my heater is about right and at maximum on the controller it fries wiring and the insulator. I use a Maplin 3-15v motor speed controller ( I forget the stock code but a photo of the control box is attached) I use it on a very low setting which seems to keep the secondary warm but not at the egg frying temperatures that it could achieve. An LED dimmer from e-bay will do much the same trick, you definitely need some form of voltage / current control or you will fry the circuit.
  9. I tried WB adjustments, they were OK but variable you had keep adjusting as conditions change, which with UK weather is constantly. I saw a Neewer UV/IR cut filter on Amazon with a review on it by someone with a modded camera. It just turned up here and I have to say for £16.00 I'm impressed. I took a few more comparison shots but this has pretty much cured the extra IR sensitivity so I'm now where I wanted to be, with the full functionality of an EOS60D and the extra IR sensitivity. For me this settles the argument, the filters are cheap enough to make the viable, I did look at the Astonomik
  10. A comparison of two Iris heads taken with the 350D and 60Da, with no WB adjustment. It can be corrected using the custom WB settings but I am also hoping to mitigate the effect of the overly sensitive sensor with a 58mm UV / IR cut filter on the daylight lenses. More as research continues......
  11. I saw Wex selling EOS 60Da s at the IAS and took the plunge, not exactly what I was expecting to leave the show with but ultimately it turned out to be a timely purchase as the shutter my old EOS350D died at the show, much to the disappointment the Astro Society who's photos I'd been taking at various stands. I appreciate that compared to a mode 600D or 650D the 60Da is a bit pricey but also taking my interest in daylight photography into account the 350D was going to replaced by a 60D or 70D in any case so the 60Da turned out to be timely buy. So far I haven't had much joy on astro imaging be
  12. Thanks for the responses and example photos, I think making the upgrade to "one camera" from my tried and trusted 350D will be easier to "sell" domestically, especially as the CN review uses a 350D to compare. I also can't fathom why Canon went to the effort of trying to make this a bit of an all rounder then advise daylight use, I got this same answer direct from a Canon rep at the IAS last year. I realise there is still a lot in favour of buying a dedicated astro modded camera and keeping the 350D rolling as a daylight camera but this leaves the question "why the hell do you need two camer
  13. I hate to revive an apparently exhausted thread but searches on this forum have not so far revealed where this may be answered........ The EOS 60Da has been out a few years now, also they seem to be coming down in price from the eyewatering £1200+ introduction price to around £700, so their appeal to me is increasing and they are gradually creeping up my shot list for replacement camera to my aging Canon EOS350D for the following reasons: My aging EOS 350D is doing just that, aging, frame count is approaching 30K and I know this camera has MTBF of around 50K on the shutter, hopefully mine is o
  14. I have the 15mm BST which I use with my f5 12" and on occasion with my f4 Quattro, it's been a favourite since I bought it. It was certainly wowing guests at a recent star party in the Quattro while pointed at M81 and M82 (with SN2014J) coming out nice and crisp, It was aided by a comma corrector as the f4 Quattro can be a bit of trail with some EPs. I have been using the Skywatcher UWA 6mm, it's OK but masses of internal reflections tend to spoil views of Jupiter and Saturn, I was just browsing here and trying to toss up between the 5 or 8mm BST, reading some of the comments I've gone for the
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