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Found 126 results

  1. Hey guys. Thought about starting this thread. I feel like we all should inform eachother and newer members alike about the magngifications that can be achieved on planets,that provide the best sharpness/size ratio,depending on the scope and seeing. After this thread has grown a bit, i feel like this should be pinned,as to provide a little guide to newer members that are not experienced with planetary observing,as many will be fooled with the typical 50x per inch of aperture and get disappointed when they find that that image will be dim and blurry. For my 8” F/6 Sky-Watcher Dob For Saturn i like to use 150x in medium seeing and if i want something a bit bigger , switch to 240x ,which will give me a bigger,but blurrier image.iBut In good seeing, i found that 240x was very usable.When we have perfect conditions, i m certainly trying 300x. Mars, isnt very big in the sky right now,so even at high magnifications like 300x it still appears as a small orange dot. For observing mars,I suggest waiting for it to reach opposition.It benifits hugely from it! However,this happens once every 2 years....But 5ere are other planets to keep you occupied until then, such as jupiter,saturn and Venus. For Venus, i use 50-100-120 depending on its phase. For Jupiter, i like to use 150x, as it provides a very sharp image,with key features of the planet such as bands being very detailed.Waiting on my 6mm UWA Skywatcher to bring it to 200 and see how that plays out. Be careful! Don’t magnify jupiter too much, as it will loose much of its features and sharpness. Neptune and Uranus: These two will not impress, but are certainly have a nice colour to them. Even ar high magnifications, such as 300x and 400x, they will look like small discs with color in them.Uranus will look be colored green and Neptune a fainter blue. Mercury About mercury...Havent gotten the chance to observe it ,so the guys will have to inform you about that? Feel free to give your own opinions as to give members a wider source of information to help them observe better ! Cheers and clear skies. Kronos
  2. Got images of Jupiter and Saturn in the morning and a tiny Mars in the evening. Saturn was very low and a fence may have blocked some light. Apparent diameter of Mars is now below 5" and the evening seeing was poor. Used: CPC800, ASI120MC, ADC, processed in Registax6.
  3. I had another go at imaging the shrinking Mars, this time without and with a x2 Barlow lens. The results are better with the Barlow, which is what one is led to expect. For whatever reason (probably bad seeing and/or low planets) when I tried a Barlow previously it just made the blur bigger. Equipment: C8 SE, ASI120MC, x2 Skywatcher kit Barlow element screwed directly into 1.25" barrel of the ZWO camera. This does seem to give x2 in practice. I did not use an ADC on the grounds that I shouldn't need one with Mars at an altitude of over 40 degrees. 3000 image video captured with Sharpcap. Processed in Registax6. I found that the Sharpcap exposure histogram did not appear to work on such a small image, so had to estimate the exposure. Yes, optical ADC correction would be better, but the dispersion seemed very small. Blowing up the image x2 in Registax showed a small colour fringe, which I took out with a single point of correction. The images show some surface detail though the contrast is low (if you are using a flatscreen try viewing from below: ?) Mare Sirenum, with Mare Acidalium just discernible foreshortened at upper right.
  4. Here is an image of Mars I made on 9 Jan this year, with a C8 SE, and ASI120MC camera. The images are rather small (around 7" dia). Mars is now much higher in the sky than at opposition, so it seemed worth taking a few farewell images as it diminishes in size. Captured with Sharpcap. I did not use the ADC - the images are corrected for AD in the processing in Registax. This is from a run of 3000 images. I have included a x3 Photoshop zoom of the same image to indicate the size of Mars at opposition on the same scale. I was quite pleased to record some surface detail, corresponding with the position of Syrtis Major. If I'd had more time, I could have tried some images using a Barlow lens. I have just discovered that I can unscrew the lens section from a Skywatcher x2 Barlow and screw it onto the 1.25" nosepiece of the ASI120MC, which will give a more modest zoom (I think).
  5. Hi. I’m kind of new to stargazing and I want to view mars. On the website I bought my telescope from it says that planetary observation can be done with clear images being produced but I can’t see much of Mars and I was wondering what eyepiece would be best it has a 114 mm apature. thanks for any help you can provide.
  6. Hi everyone Ages since I was here. Anyhow the recent Mars-Neptune conjunction on Dec 7 prompted me to try to capture it with my Canon 350D and 300mm lens on a fixed tripod. Both images are stacks of about 10 images with exposure of about 1s. Taken at dusk. Chris
  7. I imaged the conjunction around 17.30hrs GMT with my Startravel and ASI120MC camera on the SLT mount (+fixed wood tripod). The image scale with my C8 would clearly have been too large. The image, processed in Registax6 from 200 frames, is shown below. The image is shown horizontally flipped to match the telescopic view with star diagonal. I puzzled for some time over what exactly I had captured, but the centre dot is Mars (overexposed) the faint dot at lower L is Neptune, and the brighter dot at upper R is the star 81 Aqr. I also took a run which has Mars only slightly overexposed, and looking very small, and inevitably not capturing Neptune.
  8. From the album: Solar System Objects

    Mars with Hellas Planitia and Syrtis Major visible. Looks like the Dust storm, which was persisting on Mars for the last few months is starting to die down, revealing more detail than only a couple of weeks ago.

    © Mariusz Goralski

  9. From the album: Solar System Objects

    This image is a compilation of my captures of Mars at various dates during this years opposition season of Mars. All of the images were taken using a 8" SCT at 6764mm focal length/f33.3 with an Imaging Source 21au618 and Skyris 618C CCDs. Since all of the images were taken at the same focal length and the same telescope, this is a good representation and comparison of the size of the martian disc as it got closer, was at opposition and was getting further from Earth.

    © Mariusz Goralski

  10. From the album: Solar System Objects

    In this image Olympus Mons is visible in the lower right side near the terminator, Tharsis Montes in the middle and a "Y" shaped squiggle in the center right disc is Valles Marinares. This image of Mars was taken using a 8" SCT at 6764mm focal length/f33.3 with a Imaging source 21au618 and Skyris 618C CCDs.

    © Mariusz Goralski

  11. From the album: Solar System Objects

    This image of Mars was taken using a 8" SCT at 6764mm focal length/f33.3 with a Imaging source 21au618 and Skyris 618C CCDs.

    © Mariusz Goralski

  12. From the album: Solar System Objects

    This image of Mars was taken using a 8" SCT at 6764mm focal length/f33.3 with a Imaging source 21au618 and Skyris 618C CCDs.

    © Mariusz Goralski

  13. From the album: Solar System Objects

    This image was taken during the night of Mars' closest approach to earth during the 2018 opposition. This image was taken using a 8" SCT at 6764mm focal length/f33.3 with a Imaging source 21au618 and Skyris 618C CCDs.

    © Mariusz Goralski

  14. I have continued to image Mars as it moves away. It is getting smaller, but on the other hand I don't have to get up in the middle of the night, the dust storm has subsided, and it is gaining significantly in altitude. Here is a series of images taken in September and early October, all taken with a C8 SE, ASI120MC, +ADC, processed in Registax 6. The seeing was often poor, but seemed better on Oct 3.
  15. Last night was the "Virtual Star Party", a live show that lets amateur and professional astronomers show the night sky from their telescopes. If you've never seen it, or missed out on last night's episode, catch it here: Last night I brought Jupiter and Mars to the VSP, and despite it being 3:30am when the show finished for me, I hung on for an extra hour to get my first image of Saturn for 2014! All the planets (and Europa) where shot using the exact same set up, so the image is a good example of their relative sizes currently. Equipment: Meade LX90 8" SCT Meade 2x Shorty Barlow ASI120mc! My scope needs collimation as it was recently repaired and seeing conditions where less than favorable, but no matter how many times I look through my scope, these planets blow me away!
  16. Hi folks, I captured a few shots of Mars and Saturn in the early hours of Monday morning. Unfortunately the Saturn images were waaaay too dark and dim to be useable. Even though they looked bright enough on my laptop screen when I play the avis back now, I realise I needed to bump up the settings significantly before I’d be able to create an image recognisable as Saturn! So anyway, boosted by my attempt earlier in the month with the 2x barlow, I thought I’d have a crack with the 3x. Truthfully I was pushing my luck as the seeing was pretty poor, and very few frames actually captured the round disk of Mars. I believe this explains the ‘mist’ of noise around the planet in the images from both cameras! When I ran the DMK21 version through Registax, I noticed a white splodge on the upper right section of the planet itself. Bit frustrating I thought, but then there’s streetlamps everywhere here and I’m using a £9.99 3x barlow of no known brand, so these things happen. But when I processed the SPC900 version taken about 10 minutes later, it cropped up again, and appeared to have moved a distance relative to the other features on the images, in line with Mars’ rotation. Any ideas? In comparing the cameras, I think these confirm the suspicions I’d formed from the Jupiter images I'd managed earlier in the year, that this camera is very strong in good seeing conditions, and picks up a lot more detail in good seeing than the SPC900 does. However, in poor – average seeing, the SPC900 actually does just as good a job really. I guess ultimately any equipment we have is going to be limited by the atmosphere we have to look through... Can't wait to have another crack at these two fascinating targets, hopefully in better seeing, and when I get my settings right!
  17. From the album: My Astro Pics

    Taken with my Panasonic Lumix through a Baader Zoom Eyepiece + Baader Neodymium Filter using my Orion XT8.

    © ©DanielJamesWatts

  18. Stu

    Opposition of Mars

    Mars at Opposition, best placed for viewing ie at its largest apparent diameter of 24.3 arc seconds, visual magnitude -2.8 and a distance of 57.8 million km. It transits at 1.15am but at a height of only 13.2 degrees above the horizon from London. Best bet is to get on a plane and head South!
  19. Stu

    Moon and Mars Conjunction

    A tricky one to see being very low in the sky just before dawn. At 5am the Moon is at around 15 degrees altitude, with Mars just under 3.5 degrees away Best seen with the naked eye or binoculars
  20. mitchelln

    Mars 140415 5

    From the album: Mars

    Mars on 15ht April 2014

    © Neill Mitchell

  21. Mars 31/07/2018 01:36 GSO 0.20 m Sky-Watcher EQ-5 Pro Deluxe motorized ASI 120MC + IR/UV Cut filter GSO barlow lens 5x (APO) Baader Planetarium IR/UV Cut filter f: 5000 mm f/25 Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/ My best Mars with the newton. ?
  22. Mars will appear at a perihelic opposition from the Sun during the night of 2018 JUL 26-27. Greatest brilliance at magnitude -2.8 is expected on JUL 28, with closest approach to Earth on JUL 31. It will be nearly as bright and close as in 2003, which was its closest in more than 60,000 years. Photos and descriptions of Mars during its current apparition would be welcome additions to this thread.
  23. Hello again astronomers, Looking forward to the opposition of Mars in a bit over a month from now, the one thing that has me a bit concerned is the developing dust storm on Mars, so naturally I'm keeping an eye on it and hoping, hoping hard for it to settle down... I seen a photo today showing that the whole Mars globe is dusted out, but photos like this have turned up previously, such as on the same day I took the below picture and showed a hazed out dust ball, but obviously that was not the case, although there is definitely a dust storm developing as shown in the actual pic and "Mars Globe" simulation image. Let's hope the Mars Clears up by August... this year.
  24. Hello, i have a presentation for astronomy and I need to understand how Kepler received to find the elliptical orbit of mars. Therefore I use his book Astronomia Nova and due to its hard to comprehend its scientific language, additionally I use this website too: New Astronomy Well, I have difficulties with understand two main aspects: First; In Chapter 51 of Astronomia Nova, Kepler determines the distance between Mars and sun. From that he corrects his hypothesis of chapter 40. (Chapter 56) Picture After that in Chapter 58 is rejects his hypothesis he made in chapter 56. What was the problem? Actually the distances were correct but were the angles wrong? Is that the case? If yes, how can the distances be correct but not the angles? Can anyone tell me the idea behind chapter 56 to 58? Second; In Chapter 40, kepler suggests a model for the orbit of mars. there are also distances from sun to mars. But in Chapter 51 he calculates distances from Mars to Sun again and then he prefers another orbit. Whats the difference between Chapter 40 and 51 with the distances? Due to english is not my first language, maybe i miss some important detail. Thanks
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