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  2. Also, this is a good one for finding deep sky objects (DSOs): https://www.amazon.com/Turn-Left-Orion-Hundreds-Telescope/dp/1108457568/ref=sr_1_19?crid=ZR68LK69YIKX&keywords=astronomy+books+for+adults&qid=1558965480&s=gateway&sprefix=astonom%2Caps%2C236&sr=8-19
  3. Hi Tom, this seems a good place to start: https://www.amazon.com/Stargazing-Beginners-Royal-Observatory-Greenwich/dp/0008196273/ref=sr_1_23?crid=ZR68LK69YIKX&keywords=astronomy+books+for+adults&qid=1558965039&s=gateway&sprefix=astonom%2Caps%2C236&sr=8-23
  4. The Vixen GPD2 is the latest (and, I believe, final) incarnation of the GPDX. It is no longer produced. The relevant Technical Data are: * RA Axis: 144 tooth brass wheel gears, whole circle movement * RA Axis worm wheel diameter / thickness: 74mm / 6mm * RA Axis worm axis diameter / outside diameter: 6mm / 11mm * RA Axis length: 168mm (steel) * RA Axis bearing: Friction bearing * Declination Axis: 144 tooth brass wheel gears, whole circle movement * Declination Axis worm Wheel diameter / thickness: 74mm / 6mm * Declination Axis worm axis diameter / outside diameter: 6mm / 11mm * Declination Axis length: 114.5mm * Declination Axis bearing: Friction bearing * Periodic error: approx. +/- 10 arc. sec. * R.A. graduations: RA 10 min. increments * Dec graduations: 2-degree Increments * Polar Axis Scope: 6x20, 8-degree (FOV) * Mount includes pre-installed variable intensity illuminator (requires AA battery) * Polar Axis altitude adjustment: 0 to 62 degrees * Azimuth adjustment: Double screw fine adjustment * Counter weight 1 x 3.7kg * Maximum loading weight 15kg (assume about half this for imaging) * Weight: 8.5kg. without counterweight * Handset/GoTo: Sky Sensor 2000 PC (SS2k) * Motors: MT-4 * Country of origin: Japan Although this mount looks like the EQ5 (which is a clone of the GP), in most people's opinion it performs better than the HEQ5. The SS2k handset is superior to the SynScan handsets. I have been controlling it with the handset and also with Guide v9, using LX200 protocol (RS232). There is a comprehensive mount review at https://www.chuckhawks.com/vixen_GPD2.htm Also included: * Autoguide (ST4) cable, specific to the SS2k (normal ST4 cables will not work) * Original knobs in case you want to return it to manual mode. * Two spare worm gears, never unwrapped. * Manuals for SS2k, SS2k PC upgrade, GPDX mount (function is identical to GPD2) * Review documents, instructions for EPROM replacement, instructions for strip, clean and reassemble The UK RRP was £1080. £550, collection only, from Fordingbridge, Hants. Payment by BACS (preferred) or PayPal net of fees. Offered for sale elsewhere. NB, this does not include the tripod, which I am selling separately. Reason for sale: upgraded to higher capacity mount.
  5. That is rather good and I really like the wider view
  6. Surprise surprise , still grinding that axe , the matter is now closed I have seen the email from RB , he is satisfied with the code matter now closed , let’s not chirp in every time someone mentions DSD .
  7. Thanks Alistair. I found that going for 10 minute luminance subs made a huge difference in pulling the antennae out of the noise/sky background. With hindsight I should probable have gone for 15 or 20 minute subs. Still learning!
  8. The antenae look a lot better defined on this version and the core is imo excellent; well worth revisiting!
  9. Second image with my dual imaging kit and since the moon was up and no real dark i am on narrowband subjects. The Bubble is familiar to all so needs no explanation, other than this image is 47 x 10' H, 44 x 10' O and 43 x 10' S taken over three nights this last week. I'm all ears about palette feedback as I find SHO quite difficult thanks for looking
  10. Given this month's challenge, I thought I'd have a shot at processing a single frame. I can't enter it as it's guided and a two-minute exposure, but it does show what a single DSLR frame can do. Naturally I chose the highest scoring frame. Main issue is the remaining hot pixels. Why is this so much better than my first stacked images etc?:
  11. I have a low power 28mm 2 inch explore scientific ep i use for finding it, only issue is it brings out so many stars i have tremendous trouble finding the correct target.. so finding the main stars that make up hercules is difficult. The riger quickfinder is to dim to line up in the day it has to be dark i will make it my mission tonight to try and align riger im thinking it needs to be in the exact same area as my old standard finder scope was. Currently my finder is higher up the teleacope tube.
  12. Still waiting for the CEM60 at the mo to finalise measurements but finally able to start placement of pegs to locate the corners of the build. Also shown is a section through the proposed wall/floor/foundation area. I built the model with a square (2000mm) base, that has now changed and will be 2000mm (L) x 1700mm (W). Fixed wall height circa 1220mm, sitting on treated wooden sleepers which in turn sit on blockwork foundations. Another change I'm looking at is to make the roof run-off rails detachable so they don't encroach on a paved seating area when not in use. I did this once before and the rails will slot into metal brackets at the end of the building. Francis
  13. Thanks Carole. These are pretty low altitude even in southern Spain. I wouldn't attempt to capture them here in London. Enjoy Spain - you should have clear skies as the weather forecast is good. Peter
  14. I’m looking at the 174 as a mate has one and swears by it. The pixel size is an issue for the 50mm Lunt though (the only solar I intend to use). This tends to lean me towards the 178m and back around the circle I come. Not too happy with the fact that the 5P-11m has apparently decided to retire early plus there are some possibilities with the 174 and certain DSOs which add to the party a bit. thanks for the continuing input chaps Keith
  15. That's pretty good for the short integration time and sky quality. There is a fair amount of detail shown in the spiral arms. Alan
  16. Great image Peter. I got all excited then thinking you had done it from the UK until I saw you did it in Spain. Going to Spain on Friday, but will only have a skytracker and camera lens available. Carole
  17. Use your lowest power eyepiece to help with the finding process. Try and get the Rigel finder as closely aligned with the view through the main scope as possible. You can do this in daylight using a target that is a mile or so away such as a tree top, church spire etc, etc. Thje Rigel view won't show M13 but if you can put the "bulls eye" where shown on the star chart below, M13 should be in or near the field of view with a low power eyepiece in the scope:
  18. Here ypu go. https://www.amazon.co.uk/gp/product/B07KM9XF19/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 Measurements are 10cm wide by 16cm high by 3cm thick. Seems quite well made.
  19. At least the box won’t be wasted. Will come in handy one day for shipping something.
  20. My primary reference to pixel size was in terms of Ha solar and Lunt 50 - very small focal length scope, but yes, 127mm one could well use 174 chip with suitable barlow for planets.
  21. Ridiculous! The sooner packagers have to pay the full environmental cost of packaging and its disposal, the better!
  22. Clock mechanism in case. The pendulum rod is a steel rod from an ancient wall clock but seems to be too flexible. I may try a dowel rod instead though the air friction will be much higher.
  23. Could you put up a link for the pouch please? Also what dimensions is it? Ta.
  24. NGC 4038 and NGC 4039 - known as the antennae galaxies in Corvus. Two interacting galaxies causing giant tidal streams and starburst star creation as they interact. 21h20m total integration (48x600s and 56x300s L, 37x300s R, 32x300s G, 34x300s B). Image capture on my dual rig in Spain (APM TMB 152 LZOS refractors, 10Micron GM2000 mount, QSI6120wsg8 cameras).
  25. For the data connections (all the wiring to the VM110 board) you can use thinner wire like 22 awg as none of it is high current. Only wiring going to the relay board COM, NO and NC contacts, motor, 12V battery, fuse, rigel system, and associated switches needs to be of 16 awg or similar (ie. any wire that can be carrying current going to the motor.) Using multi-strand wire of a similar overall thickness to single core is fine. It's current rating is only slightly less that the single core and won't be a problem in your case. Alan
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