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BlockHead

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BlockHead
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Member, Administrator

Comments

  • You can arbitrarily combine images (even in Pixinsight) easily. The point is to blend them in such a way that each is given the *proper contribution* based on the amount of signal and noise. This is mathematical distinction.  I am describing two dif…
    in Blending data from two different scopes Comment by BlockHead January 2022
  • First- you really should figure out from an acquisition standpoint why there is an oversubtraction of hot pixels. Typically this means you are using aged darks or the temperature is changing.  GESD does not handle high and low values symmetrically. …
    in Processing Narrowband and black spots... Comment by BlockHead January 2022
  • Currently I am dealing with a nuance that gets into the weeds.I have data from two different telescopes... and you cannot simply combine them and get the weighting correct. This is because PixInsight will measure the noise...but not take into accoun…
    in Blending data from two different scopes Comment by BlockHead January 2022
  • I did ask. TelescopeLive says this is a very special dataset (they are working on collecting even more OIII data!). So you can get the dataset and others by becoming a member. You can sign up here for the 1-week free trial:  https://bit.ly/3FeEEqqNe…
    in Ou4 Nebula Comment by BlockHead January 2022
  • Hi Bruce, There are two tricky parts of combining this kind of data. The first hurdle is usually aligning the images. SInce they will have different FOVs and different faint limits (numbers of stars)- this can make using StarAligment a challenge to …
    in Blending data from two different scopes Comment by BlockHead January 2022
  • That is tricky. This is Telescope Live data.I will need to ask about this. The data set is Huge because of the number of hours.(and a good fraction of it is not so great) so...TBD -the Blockhead
    in Ou4 Nebula Comment by BlockHead January 2022
  • Hi Paul, Sorry, the question is phrased in a way that confuses me. If you have 'RGB" files, then you are not using an color filter array (OSC) image- so debayering isn't an option (you are already "debayered" :) ).  I have found that running calibra…
    in Subframe selector Comment by BlockHead January 2022
  • This is an excellent result and to me Alnitak was far kinder to you here than to many imagers. But to answer your question from my experience- there is no truly satisfactory method of "dealing" with the internal reflections caused by microlensing. T…
    in Microlensing around bright stars Comment by BlockHead January 2022
  • Without seeing a screenshot I cannot say. However, I think I was much more conservative by using
    in Missing Values Comment by BlockHead January 2022
  • Binning some CMOS sensors simply does not work. It depends on how on-chip binning works- and it isn't a given it works like the old CCD sensors.  For example Jon Talbot's description of how the ZWO6200 works. -the Blockhead
    in WBPP master dark and flats over subtraction. Comment by BlockHead January 2022
  • Many OSC are 12-bit sensors. Could this be a source of difficulty? -the Blockhead
    in Missing Values Comment by BlockHead January 2022
  • I see.But I am still curious. The data must be registered using StarAlignment. The interpolation I would have though to result in floating point results? -the Blockhead
    in Missing FITS Info Question Comment by BlockHead January 2022
  • Hi Joe, I was being very particular in my response. Registration and Image Integration are post-processing options. They are enabled in the LIGHTS tab. When you enable/check them in the LIGHTS tab, they will be checked as in play in the post process…
    in WBPP no light master produced Comment by BlockHead January 2022
  • Wait... how was this file an integer file?? That is still amystery? -the Blockhead
    in Missing FITS Info Question Comment by BlockHead January 2022
  • Here is a little proof...  :)my PI desktop at the moment
    in request to Adam Block Comment by BlockHead January 2022
  • I am working on the Squid nebula example in Horizons.It is a tough one.... at least for me.I will release more videos on it in the next days or so.I have 6-7 sections... need to produce the videos... There is no one particular method for NB. So I wi…
    in request to Adam Block Comment by BlockHead January 2022
  • If you are using WBPP to automatically register and integrate, you need to check this post processing options in the Lights tab. BUT- this is NOT what I am teaching beginners in FastTrack Training. Are you going through my course? -the Blockhead
    in WBPP no light master produced Comment by BlockHead January 2022
  • It does not appear you chose a method (such as "Auto").I cannot tell because your template is iconized. You need to check the Hot Sigma option under the Auto method. This is my guess.  -the Blockhead
    in Cosmetic Correction error Comment by BlockHead January 2022
  • That flat looks fine..and all that matters is where it calibrates the lights...  -the Blockhead
    in Lum Calibration Problem Comment by BlockHead January 2022
  • Hi Reggie, So... I connected with John Murphy. You might have discovered a bug. But he can't figure out how it happens exactly. The condition you describe can happen if the data was in the form of integers instead of floats.  Was were the images you…
    in Missing FITS Info Question Comment by BlockHead January 2022