What's new in RegiStar 1.0.10 Build 9886
Nov 14, 2022
- Repair flat fielding of greyscale images;
- Repair pixel averaging for nonraw 16-bit images;
- Improve pixel averaging when display scaling is large;
- Repair geometric clipping of registered images for which the source image has edges that are mostly out of bounds;
- Repair missing “?” icons for some newly created images in the Groups Manager; and
- Repair glitch in display scaling that can occur when the scaling is very large.
New in RegiStar 1.0.10 Build 9334 (May 10, 2021)
- Initialize dialogs including an open or save operation with the most recent directory;
- Allow the Open dialog to handle a much larger number of files;
- Repair functionality of “Preferences > New images > Raw input to non-raw output”;
- Allow dark frames to be subtracted from master flats;
- Provide an option to not overwrite existing files in a Save All command;
- Ensure that the active image is displayed in the Groups Manager;
- Repair a crash that could occur on open of a very large FITS file;
- Ignore the special image itself in a “Preprocess > Images in folder” command; and
- Implement automatic update checking when an evaluation RegiStar session starts.
New in RegiStar 1.0.10 (May 10, 2021)
- What’s new in version 1.0.10:
- Support for Raw images: Images taken with cameras whose sensors have a color Bayer grid are now read and opened by RegiStar. DSLR camera-raw images in proprietary format (e.g. .CR2, .NEF) are opened using Dave Coffin’s program DCRAW, and FITS-raw images are also supported. A specified Bayer array (e.g. RG/GB) and set of color multipliers can be assigned to a collection of images when they are opened, as required. Raw images are displayed in color with pixel-range and gamma adjustment. All operations have been adapted, so raw images can be processed just as easily as and in conjunction with nonraw images. RegiStar provides the tools required for creative imaging with raw images beyond simple stacking.
- Preprocessing: Dark-frame subtraction and flat-field adjustment are now implemented. These preliminary steps can be performed on a collection of linear images (for example, raw images), with the resulting corrected output then processed using Register, Combine, and other operations.
- Display Control: A new Display Control dialog replaces the previous Display Scaling dialog. Gamma adjustment, in addition to range adjustment, can be applied so linear images render well on screen. Adjustments can now be made using sliders, in addition to typing values. Adjustments are rendered in real time.
- Capture Display: This new command outputs a screen-adjusted copy of an image that is being displayed with range- or gamma-adjustment, or a raw image that is being displayed as RGB. This copy will then display properly in another image viewer or at a website.
- Rotate/Flip: This new command allows you to correctly orient an image that may have been rotated or flipped because of camera rotation or optics that cause geometric inversion. It can be used to bring the base image for a processing sequence or the final processed image into standard north-at-top, west-at-right orientation.
- Cropping masks: A rectangular cropping mask can now be drawn on any image, which has the effect of restricting operations (except preprocessing) to the specified region. This feature allows no-light rows or columns and edges with aberrated stars to be effectively removed. Masks can be applied in bulk to a directory of images.
- Retention of display and raw parameters across sessions: Parameters in effect for an image when it is closed are retained and read when the image is reopened, so the image displays when opened just as it did when closed. Any cropping mask in effect is also retained.
- Preferences enhancements: The Preferences dialog has been expanded to include default settings for raw-image handling, display control, and interpolation options. A new SetPreference scripting command allows preferences to be specified in a script.
- Other enhancements:
- The Calibrate “all open images” option now iteratively calibrates images even if they have no overlap with the originally selected reference image.
- Calibrate also includes an option to apply only a linear stretch.
- Multiple and difference view now only display reference images that overlap with the active image, sorted by overlap.
- Register and Calibrate are now somewhat faster.
- Locate Stars yields more complete star recognition on linear images.
- Screen-display calculations are now multithreaded, resulting in faster screen drawing.
- Display caching is implemented for raw images, resulting in smooth scrolling even for these complex images.
- A No-to-all option allows all unsaved images to be closed without saving, to quickly end a session.
- The upper status bar and toolbar have been enhanced to provide additional information and give easier access to commonly used features.
- Implementation of bicubic interpolation has been modified to reduce the prominence of black rings that could appear around bright stars.
New in RegiStar 1.0.7 (Oct 22, 2009)
- The ability to process several images as a batch. An entire directory of images can now be registered using just one Register command. Also, several images can be processed at a time using the expanded Calibrate and Crop/Pad commands.
- The ability to specify the dimensions of registered images directly in the Register command, instead of through a separate Crop/Pad command.
- A simpler, more direct licensing system. RegiStar now automatically obtains License Keys by connecting directly to the Auriga Imaging website. Also, if a change to a computer's configuration causes it to require a new License Key, the new key is automatically generated.
- Better support for multiple-user operating systems such as Windows XP and Windows 2000. All users can run RegiStar after it has been installed by a user who has administrator privileges, with individual users retaining customized program settings
New in RegiStar 1.0.6 (Oct 22, 2009)
- An enhanced Combine command, with new Median/Mean, Sum, Difference, and Absolute Difference options. In addition, images can now be assigned "weights" in any Combine operation.
- A Close All item in the File menu, to quickly close all open images
New in RegiStar 1.0.5 (Oct 22, 2009)
- A change to the star-detection algorithm so that stars in star maps are better detected, thus improving RegiStar's ability to register stellar images to star maps
New in RegiStar 1.0.4 (Oct 22, 2009)
- A "Noise reduction" control in the Registration control dialog which may give improved registration on very noisy images.
- Improvements to RegiStar's handling of FITS files.
- Addressing of some issues relating to the Windows 2000 operating system
New in RegiStar 1.0.3 (Oct 22, 2009)
- Support for FITS images.
- Refinements to the RegiStar registration algorithm. RegiStar is now better able to register images that have only a few stars.
- A new naming system for images created by RegiStar, which makes it easier to see at a glance how an image was created.
New in RegiStar 1.0.2 (Oct 22, 2009)
- A new Median Combine option.
- Refinements to the image registration algorithm — RegiStar can now handle even greater levels of noise and image distortion.
- More robust reading of TIFF images.
New in RegiStar 1.0.1 (Oct 22, 2009)
- A new Difference view, in addition to the existing Multiple images view.