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About umasscrew39

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    Astronomy (of course), gym rat/weightlifting, outdoor cycling, wood working
  • Location
    Northern California
  1. Best 80mm refractor

    correct- but other factors can affect your exposure time as well (e.g., camera, light pollution, etc)
  2. Multispectral Captures with StarlightLive and NB Filters

    Thanks, Rob. Very cool !!! Glad our M42 images look alike :-) Can't wait to keep exploring with this technique on my C11" with the hyperstar. Thanks for your input and initial help. Bruce
  3. Bruce Donzanti

    From my C11" EdgeHD - most with hyperstar (f/2) and some at prime (f/10) using a SX UltraStar C camera.
  4. Best 80mm refractor

    I bought a Stellarvue 80mm APO triplet (f/6) several months ago to compliment my CPC 11" and could not be happier. However, I have not tried the others for comparison purposes. Getting an 80mm and adding a focal reducer (I use a MallinCam MFR-5 II focal reducer, 0.33x to achieve f/3.6) gives you two terrific FoV. Finding a good one second hand one might be a challenge but it will be worth the wait.
  5. Multispectral Captures with StarlightLive and NB Filters

    I finally got around to trying the NB filters on M42. These were taken on an 80mm APO Triplet (f/6) with an UltraStar M using SLL, v 3.3. Both images were taken using Baader H-alpa, O-III, and S-II NB filters, 3x20s per filter stacked. First image is using the Hubble Palette and the second is using the CFHT Palette.
  6. Multispectral Captures with StarlightLive and NB Filters

    Thank you all for your comments. Dave- thank for the info. I have both Baader and Astronomik filters so will try both and I just received my OIII and SII filters to try. Rob- I have both the M and C versions of the UltraStar and have dozens of Ha images with the M camera and some with the C- no problem doing those. I'm specifically interested in using the M camera to get the multi-color image that Martin displayed. Martin- thanks much for the description of the settings and images and help again, as always. - just so I am perfectly clear and a couple of more questions: "If you collect H-alpha with 'all' (in Exposure Channel Mask) checked, you get H-alpha on all channels and when you display it combined it appears as monochrome." --- UNDERSTOOD and have done this "If you collect with just 'red' selected, then when you 'combine' it it only contains information on the red logical channel, and so when examine it with the 'Display Selected' unchecked (this displays the combined channels), you will see a red signal as there is nothing in the G and B. ---UNDERSTOOD; this is what I was doing and getting everything red (which I think was my mistake) " if you were to look at your red-only signal with 'Red' checked and 'Display Selected' checked, you should see a mono signal. For maximum clarity, by 'red' selected, I mean 'red' in the 'Channel Selection' part of the 'Display Processing' pane, and not 'red' in the Exposure Control' pane..." --- have not tried this; QUESTION: when I check 'Display Selected' , do I leave 'Modify All 'and 'Auto Align' checked?? "And this is when combined (with 'Display Selected' unchecked)"---- THIS IS THE END RESULT I AM LOOKING FOR; SO GET THIS THIS THE FINAL SETTINGS ARE... Display Selected - unchecked (thus, 'Modify All' and 'Auto Align' are still checked)- correct? - I assume it does not matter which order I use the filters just as long I select the appropriate color selected when taking my exposures, e.g., 2x30s of each stacked Sorry for the additional questions. Thx much, Bruce
  7. Over a year ago, Dom 543 had started a step-by-step method to perform such captures with NB Ha, OIII, and SII filters using SLL and a Lodestar X2 both here and in CN. I tried this the other night using a Ha 7nm Baader filter on my 80mm APO triplet refractor scope and my UltraStar M for a 15 or 30s single exposure of M27. I aligned the Dumbbell Nebula and captured a very nice B&W Ha image. However, when I unchecked ALL under Exposure Channel Mask and checked only RED as suggested by Dom's procedure, the entire screen turned red, including the image, stars, and empty space. Even the signal peak on the graph was red instead of white. Dom's procedure for M27 started with the OIII filter followed by the Ha filter but I did not have an OIII filter to follow his procedure exactly. Besides, I do not see why that would make a difference. Any ideas as to what is causing this all red image I am getting?
  8. Some colour issues with SLL 3.3

    Hi Don I have had the defective pixel removal tool enabled but always create a set of darks before I begin. Should I not be doing both? I really have not noticed any big issue in doing so but is it best not to do both? Hi Roel/Jim I also get the reddish halo around some stars- the use of filters or not make no difference.
  9. NGC6960 Western Veil Nebula with Triple Star System 52 Cyngi centered

    yikes!!!!! thanks...I always had trouble counting
  10. M 17 and NGC 6618 open cluster

    Looks great.....but get rid of the check mark!!! It only causes a distraction from the great image you took
  11. Looking to purchase this reducer - new or used
  12. Iris Nebula.png

    At f/5 with GSO 0.5x reducer which is still producing too much coma and vignetting .
  13. Thank you all for the feedback and suggestions. Greatly appreciate it.
  14. I just setup my CPC 1100 Edge HD scope with the Celestron heavy duty wedge and I want to do AP. The tripod is on a JMI wheeler bar and I put vibration pads under the wheels. The setup is on my deck on top of the main bean as I do not have a good spot on solid ground. The scope is a little shakier than without the wedge but not horrible. So, based on others experience: 1. Will this work for both short and long exposure AP or do I need a eq mount? Or, does that not matter since I can only use it on my deck and not solid ground? 2. By chance, has anyone used this setup with Starsense to align? Thanks in advance for any help/suggestions. Bruce
  15. Bruce' Stuff