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Radman40

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Everything posted by Radman40

  1. I was just looking at a really good picture of the moon taken with a smart phone. It caused me to reflect back on when I used film with an SLR and my newt 35 years ago. The phone image was better than the images I used to take then and there are no trips to the chemist with my roll of Ektachrome 400 and then the wait for processing. We get an instant result now. All much better but I do miss the sense of excitement and anticipation when waiting and going to collect my slides. For all the gains there are some losses!
  2. Extraordinary. This is far better than what I was producing with a SLR camera on a telescope using film 35 years ago. So much has changed in that time. Best thing is you don’t have to send the film off for processing though I do miss the sense of excitement and anticipation when going to pick up my slides.
  3. Sinus Iridum is always a crowd pleaser. The shadow at the northeastern end of the Jura Mountains is caused by a mountain feature called Cape Laplace and is 2600m high.230121 20% 5000 Prime.tif
  4. Like the opening to a Star Wars film!
  5. I tried to buy a set of pans the other day and had the same problem. Everywhere out of stock. Roll on the vaccine. This is our only way out of this.
  6. Just wondering how you would look through the polar scope to align My eyes were on stalks when I saw this. Looks like they would need to be to look through this unless I am missing something (which is more than likely).
  7. Thanks....I will have another fiddle with the software and see if I can get anymore out of the image.
  8. Amazing image. I am totally blown away. That fullerscope is a total beast. I have been so impressed with your images of Venus and now this! I have been trying to get some decent images of the apollo 15 landing site for years and I have never come close to getting anything like this. I was out last night also using a 250mm f6,3 newt and this is the best I could come up with. Like you the seeing was poor and the wind was blowing the scope all over the place. This was taken with a 2.5x powermate, 10% from 4000 frames using an ZWO385MC and a filter. I wonder if i should acquire more frames? I see you gathered 10K. I used 10% from 4000.
  9. Thought it may be fun to compare my WO 72mm Megrez refactor with my OOUK 250 mm f6.3 Newtonian to see what the difference in resolution may be. I tried to keep everything as equal as possible e,g, focal length, image acquisition parameters, processing etc. You can certainly see a difference but I thought it would have been more marked. The seeing was 'average' at best so I guess the newt was not operating at its full potential. The target is the Theophilus/Cyrillus/Catharina trio which was well paced last night. Both scopes are easily able to resolve 8km craters but the the 72mm cannot resolve the 4km craters in Mare Nectaris which the 250mm is just managing (though it may not show in this compressed image). Makes you wonder that for the average guy like me, who enjoys a bit of back garden astronomy under light polluted UK skies, a modest aperture scope will go a long way to . Certainly cheaper and easier that lugging large aperture scopes and their mounts in and out of the garage. I hear so often on SGL that the best scope is the one you use most often. I think when I get too old to haul the Newt around I may settle for a 102mm refactor. I shall repeat the exercise under good seeing to see how things stack up.
  10. Nice...why do I never get bored of looking at the moon.
  11. The Earth must be really bright and amazing to look at from the moon at night. I think I read somewhere that it is like having a 40 watt blue light bulb suspended a couple of meters above your head.
  12. Fantastic....amazing detail with a 150mm objective. Shows what can be done.
  13. Here is my offering for the 11% moon yesterday evening. I normally cant get my main scope on a young moon as it always behind the house. I was lucky last night as it was visible in a small gap between my house and the neighbours. I had a 45 min window to get the image and just made it. Looking at the image there is an interesting bright feature on the terminator toward the bottom of the image. This caught my eye when I was looking at the moon before imaging. You can seen this on Bizibilders image also (above). I think this is the rising sun catching the walls of the crater Biela. Virtual Moon Atlas says this crater has steep walls. Its amazing how much light can be reflected from ab object that only reflects back 12% of the light incident on it. This consists of 5 panes. 10% of 2000 images.
  14. I totally agree. I have never been able to come close to photographically capturing the beauty and atmosphere generated by a crescent moon with a bright planet close by. I have told my kids to make sure they put me in a care home (when the time comes) with a good western or eastern horizon. I may not be able to use a telescope then but hopefully I will still be able to enjoy that whilst sitting on my commode!
  15. It is interesting when reading the forums how folk (and I include myself in this) spend a lot of time agonising over which camera or scope to use in seeking to produce the high quality images of the moon and planets we all drool over. We hear of ‘aperture fever’ and all feel slightly inadequate when the next new camera comes to market which pushes our own towards the scrap heap of obsolescence. Having gained a little experience I am starting to think that we should not spend too much time worrying about some of the factors that impact on the quality of imaging as their impact is marginal compared to others. I have therefore produced a list of factors (in no particular order) which impact upon the quality images. It would be interesting to see the views of the views of the community as to which factors they feel are the most important when it comes to imaging the moon and planets. Place the factors in order of importance (high to low) and give each factor a score out of 10 which indicates how much impact that factor has (10 high impact, 1 low impact). Feel free to add, modify, remove or combine factors at your discretion. I have not included cloud cover for obvious reasons. Exposure time. Pixel size. Sampling. Instrument Focal length. Choice of image acquisition software. Collimation very slightly out. Collimation more significantly out. Chance imaging/stacking etc. Choice of image processing software. Seeing conditions. Altitude of object. Aperture of instrument. Quality of Barlow etc. Type of computer used to acquire images. Image processing techniques. Filters (state type). Colour vs b/w camera. Being dressed properly. Ease/time of setting up equipment. Motivation following a day at work. Sensor size. Demands of family. External Temperature. It will be very interesting to see how much agreement there is in the lists!
  16. Nice images. It is such a shame that you can be right in the middle of the Yorkshire Dales and still be affected by the dreaded light pollution. Is that that you have to get about 50-60 miles from a town to really escape it?
  17. Well so far the real crowd pleasers so far seem to be total solar eclipses, Hale Bopp, seeing the sky from a really dark site, and first experiences with a half decent scope. I had dipped out of astronomy when hale bopp was around in favour of paying attention to my new wife and career. Both of those worked out very well so it was time well invested but I do really regret not making some time to observe it properly. I really must go an see a total eclipse. We are very lucky on earth to be able to experience these the way we do. Seeing a really really dark sky is something that is difficult to achieve these days. Getting all the ingredients in place is not easy. Weather, no moon, time off work, the need to travel, family commitments etc etc. Persistence is required here!
  18. Nice one! Never seen them myself except from a aircraft flying back from the states.
  19. What has been your best ‘wow’ moment in astronomy? I have so many it is hard to choose. The first time I saw the moons of Jupiter as a kid with a pair of 10 by 50 binos is one. Moving up from an 80mm newt to a 150 mm newt was another. Actually seeing things like the ring nebula actually resembled something like you see it in the books was fantastic. The first view of M42 in my 250mm newt also sticks in my mind. My best wow moments have come from meteor showers, especially the Perseids. A bright fireball that casts s shadow is always a jaw dropping moment. What have been your most memorable moments?
  20. Hi Ford. That is interesting about the poor observing in the UAE. I have often wondered what the sky is like there.
  21. Thanks Dave....a very interesting tale of your journey with all the different scopes. A 4 inch does seem like a good trade off between portability and aperture. It’s all about ease of use for me at the moment. Mike....your eyepiece box is a thing of beauty. Extremely pleasing on the eye.
  22. Definition of serious, “Demanding or characterised by careful consideration or application” By this definition a serious scope is one that you have thought very carefully about what you want to use it for, what you want from it and then you actually use and enjoy!
  23. Thanks for all the replies so far. Interesting replys which have firmed up my thinking. I would be using it mainly for visual and the odd bit of dabbling with imaging. I may do some more serious imaging when time allows and I am not wreck on the sofa after work or chasing around after the family. I am not even going to go down the doublet/triplet rabbit hole. Does anyone think there is just too much choice with everything these days these days? Buying Astro equipment is bad enough but buying buying a light bulb is like a punishment from the Greek gods.
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