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dobblob

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  • Content Count

    52
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About dobblob

  • Rank
    Nebula

Profile Information

  • Gender
    Male
  • Interests
    astronomy, birding
  • Location
    Upstate New York
  1. Hi Tony from another upstate New Yorker. Welcome !
  2. I would be pretty sure this is StarLink. I captured a similar image on the 12th with the flash rate looking about the same. I checked the time against Stellarium which showed no satellites for the area of sky. I assume that Stellarium had no update yet and anyway why would it show satellites that are still jockeying for their final orbits? StarLinks are often strung out like that and do not necessarily follow single file. DSS kappa-sigma clipping got rid of them easily. Hooray ! We have weapons that can defeat you Mr. Musk.......
  3. The first image is a classic example of "walking noise" caused by the sensor repeatedly recording the image at the same position. I experienced this often with my D 600. The usual answer for this is "dithering" whereby the image on the sensor is shifted by a few pixels each frame. This is usually accomplished by guiding software but it looks like you have tracking only. If the scope can be offset manually between frames by a very small amount in RA and DEC then this can help. I suppose it might be possible to VERY briefly stop tracking for a few seconds but offsetting DEC will depend on whether you have DEC fine slewing. (I don't know the NEQ 6 mount). I attempt this myself but not every frame. That would be tedious and time consuming. The second image shows what appears to be banding from the camera . I am not sure here. It could be some interaction because of the cal frame removals but it seems an unlikely coincidence that the bands are so vertically aligned to the sensor. StarTools has a banding reduction module which seems to work well. Short nights, no dithering and higher camera temperatures never help and considering that I have to say the image ain't bad at all! (green is a little bilious though...)
  4. Does the dovetail have an overhang, one end or the other beyond the shoe? Usually there is a hole or two that will accept a screw/bolt (1/4 x 20 ?). A screw of the right length into the dovetail may prevent it dropping out completely. I have done this and it has saved my a** more than once.
  5. No asteroid I'm afraid. Asteroids move very slowly and it may take many nights to detect the change in position. It was likely a satellite. Programs such as Stellarium or sites like Heavens Above can show what satellite was passing at the time and position you saw it. These days it is difficult NOT to see a satellite scooting through the field of view...
  6. I was hoping someone would come in ahead of me on offering industrial slag. (Don't like to be the first to be slapped down if wrong!). As a kid me and my mates thought we had found wonderful meteorites on a road building project before it all got tarmacked over. Looked just like the samples pictured.
  7. Those opposed screws are the azimuth adjustment. They bear on the post on the top of the tripod to move the mount left or right. Looks like you may need to release the cap head screw in the slot to allow this.
  8. What sort of fool would believe ZERO negative feedback out of 1700? Psst! I have a nice bridge for sale and plenty of snake oil.... any offers?
  9. Now starting to see long queues at the wash basins in public toilets and a lack of paper in the stalls. Wonder why......
  10. OK that's the problem. The finder scope has nowhere near enough magnification for you to keep the star as accurately as required on the cross hairs. Not sure how that can be improved except to fit a much longer focal length finder and/or higher mag eyepiece. Not a satisfactory solution as it effectively means another scope attached! Perhaps fitting a drive motor should be the way to go.
  11. Which Skywatcher EQ 5 mount are we talking of here? Which brand? The EQ 5's I see out there are the costly goto's and do not have a manual cable. If yours has a manual cable to turn RA then it is certainly a mount unsuitable for astrophotography on nebulae. Also you say it is not motorised ? Best post a photo so we are sure what you have. Edit: Sorry, I see which one you have now-indeed a manual EQ. So yes it is very difficult to track manually no matter how smooth and steady you feel your control is. Also as soon as you touch the cable handle it will impart movement and vibration into the scope. Those cables are really only intended for manual steering. How are you looking at the star/image to perform the manual tracking? Usually the camera will not show a live view so I can only guess you have a second scope attached or using a finder.
  12. I am sorry but for me this news is no news re 17 Ah power tank. It tanked irretrievably. The battery is pretty weak and in spite of conforming to the charge/discharge instructions it failed me after some months. The charge/discharge/ charged LED's meant nothing. In contradiction with each other. Yes I could have fitted a better battery and if I had I nevertheless discovered that the USB ports were not beefy enough to supply my camera I still would not have been happy. And who wants the flashing red light option ? My tank sits in my cupboard as a standby for power cuts for it's LED flood light and nothing more if it holds charge which I doubt. Just get a discrete battery, ANY battery and a charger and connect it to your scope. This is a well known problem with power tanks. Don't bother with them any more. Do yourself a favor.
  13. Very nice Kirkster! I had a shot on this some years ago and managed an hour and no surprise that it's not a patch on yours. Gives me the incentive to try again.
  14. 1 parsec = 3.2 light years 1 Mparsec = 3.2 million light years 3000 Mparsec= 3000 x 3.2 million light years........ Sorry, I should have used the Mega not the mili, hence your confusion.
  15. S 200129 m event was only detected on 2020-1-29 and as yet is not confirmed. If confirmed it is 3000 million light years distant so I see no reason for alarm. It would be reasonable to suppose that black hole mergers have occurred much closer to us ( even in our own galaxy ?) with no life threatening results to us since the birth of the solar system. Just pull your armchair closer to the fire, sip brandy, read a good book on astrophysics and relax...
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