Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_dslr_mirrorlesss_winners.thumb.jpg.9deb4a8db27e7485a7bb99d98667c94e.jpg

DaveHKent

Members
  • Content Count

    72
  • Joined

  • Last visited

Community Reputation

25 Excellent

About DaveHKent

  • Rank
    Nebula

Profile Information

  • Location
    Kent
  1. Thanks. I do have the L bracket. Some of it is that I have never used an eq mount before, so plenty new skills to learn. If I can produce images like that, I’d be over the moon
  2. Cheers, I'll give it a go anyway. I do have a 75-300mm lens. What is the longest focal length you think the SA can cope with?
  3. I got a SA earlier in the year and I'm just getting to grips with it? Does the auto guide just correct for slight imperfections in polar alignment? I've got a Canon 700D, a ZWO ASI1200MC and a number of raspberry pi sitting about. With the scope from my Celestron NexStar 90SLT (90mm ap, 1250 focal length) being able to screw straight onto the Star Adventurer, I was hoping that just the purchase of a guide scope would give some very good images for not much extra cost.
  4. I have a few basic questions after finally getting some cloudless nights and really have a play with my SA. 1) How do you aim the SA at your target, especially if you are using a scope on the dovetail bar, rather than a camera on a ball head? Does anyone use the DA dial or is it just a case of manually moving the RA and DA axis until it points into about the right place, then zoom in for finer positioning? 2) Is there any benefit to having the tripod lower than higher? I have a manfrotto 055 tripod, so it is pretty stable, having it low did mean kneeling on damp ground for polar alignment. 3) What do people do with their intervalometer when doing long exposures? I left mine swinging for one exposure and it did affect the quality. If there is not a common solution, I might look at 3d printing a holder bracket. My first real picture with this is: Not brilliant, but there was a lot of moisture in the air. Something to build on when I have built my skills up. I did try M42 shortly afterwards but reached the point where there was too much dew on the lens. A hair dryer or dew heater is my next purchase.
  5. If it helps anyone looking at mounts, I did some research through what astronomy stores stock and what people on forums such as this have used and these seem to be the best options: First Horizon 8115 (£85, load unknown) Manfrotto 055. The 055CL and 055XB are older models which can come up second hand, they will take 7Kg. The 055XPRO3 will take 9Kg and is around £149 Velbon DV-700N, 6Kg load, £100-£110 Fotomate VT-2900, 8Kg, £142 I just had a beep on my phone to say a Manfrotto 055CL from eBay has been delivered. A ball head arriving tomorrow, I should be set. Now all I need is one of those great big fans that blows the cloud away. It has not been worth trying with my rubbish tripod since my SA arrived a couple of weeks ago. Hopefully I will post a first light picture soon.
  6. The red star on the right is 52 Cyg and the rogue star looks suspiciously the same, even down to the slight reddish flare. Could it be an imaging defect? Though, none of the other stars seem to have copied. Zooming in on Stellarium there is a faint dot of nebula right where this extra star appears. I'm not sure how accurate that is, as it seems to be a photo overlaid on genuine star coordinates.
  7. Do you know what model of horizon? If I do mount my scope on it in the future (1250mm focal length), I'll need something pretty sturdy but would prefer to keep it around the £50 if that is sensible.
  8. It looks like I have recently made the right choice. I wanted a tracking mount for widefield images of the milky way and star fields, and had fancied the Omegon Mini Track (the small windup mount). Then I realised it only worked in the northern hemisphere and I'd be disappointed if I go on a more exotic holiday again, but a model that works in both was a little bit more. But for a little bit more still, they have the newer sturdier version, then add a bit more and you get both hemispheres. As the cost mounted up, it was getting close to the star adventurer, so a new one arrived on my doorstep on Friday (A very quick response to questions and shipping from Rother Valley Optics). Seeing some of the images on this thread has convinced me I have made the right choice. I have a Celestron Nexstar SLT90 (altz goto mount) and thought DSO imaging was beyond me. It looks like this will take the weight of the tube if I want to go that far, but some of the images with just Canon DSLRs have been amazing. I have got a couple of questions though. I don't have a ball head and my photography tripod is a cheap basic one. I have set up my SA on there and it is clear it is going to be very wobbly. I have a load of Amazon vouchers, are there any tripods or ball heads people would recommend on there? The Skywatcher SA tripod is £59 (but not sold on Amazon), so I was looking in the same price range. There are a number of ball heads with good reviews for £20-£30, would pretty much any of these be suitable? There is a Neewer tripod that will take 12kg for £47 and the ball head is removable, which would give me both for £50. Would I regret scrimping on this? https://www.amazon.co.uk/Neewer-Aluminum-centimeters-Camcorder-kilograms/dp/B073515X3H/ref=pd_ybh_a_1?_encoding=UTF8&psc=1&refRID=607M2SPFZFE0HN5NYFJ3 A short term alternate I could use is to put the SA onto my Nexstar Altz mount. If I didn't use the wedge and put it straight on the mount, it would fit but be mounted sideways. Would that work or would the tracking now be working the wrong way? I would not have the Nexstar mount unpowered so it did not track. How would I go about aligning, still turn the 6 so it is pointing to the ground.
  9. I managed to blend the colouring so it is a reasonable match. Not that great, but not the best weather or prep for imaging so not bad considering.
  10. Cheers. I will try playing around with the levels again. Yes, Whitstable.
  11. I think that is where my problem is. The moon appeared different colours in the last couple of video captures, so the stills and the processed image came out different. I did use the same stacking options, except the number of alignment points.
  12. Does ICE do the colour matching too? I tried dumping my images in, which had a fair amount of overlap and duplicates. It didn't do a good job of them, but I was only guessing about how to drive it.
  13. I captured the a 6% crescent a couple of nights ago, and after processing I am stitching the images together into a mosaic. It was not the best imaging session, done in a hurry before the moon got too low with bands of thin cloud keep moving across it. I also found that getting the gain and exposure settings right is quite hard for a thin moon. Any tips there would be appreciated. When stitching the last bits of moon together, I have found there is quite a colour mismatch. Any tips on what to do to try and make them match? Although you can't tell from the cut and paste below of the two areas, both are currently seperate layers in GIMP, so I can play around with levels. I have tried a few of the tools in the colours menu but I can't find anything that gets the lower part remotely close to the upper part.
  14. Wow, brilliant that was a nice and simple idea. Many thanks for that. Now to do mosaics for different phases.
  15. It is 9 panes, though a couple of them on the terminator are cropped pretty small.
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.