SharpCap 4.0 Beta

About SharpCap Beta Versions

Be aware: Beta versions of SharpCap have had less testing than usual and may contain unfinished or experimental features.

If you choose to use a beta version of SharpCap, please test the cameras and functionality you intend to use before an observing session to avoid frustration and lost observing time. You can install a beta version of SharpCap without having to uninstall the previous release version, so it’s easy to have both on the same machine and switch between them.

All beta versions have a built in time limit – they will only work up until a particular date (usually they have a life of a month or two). If your beta version runs out, check back at this page for an updated beta (or check the main downloads page for a new release).

You can use most SharpCap Pro features that are new in this version during the beta period without a license. SharpCap Pro features that existed in SharpCap 3.2 will continue to require a license in the beta versions.

Found a bug in the beta version? Please submit any bug reports if you are prompted and also report the problem in the Beta Testing Forum.

Note: We were going to call this release SharpCap 3.3, but it is now going to be SharpCap 4.0!

New Features

SharpCap 4.0 contains the following new features

  • The Sequencer – at long last – this is the big one and there’s lots to see here!
  • If using the sequencer feels a bit too complex than have a look at the Sequence Planner
  • Still mode – Just deselect the live view button in the toolbar. Most cameras support this. Some tools will put the camera back into live mode.
  • ADC alignment tool – the planets are back and this might come in handy.
  • Pixel brightness readout – find it in the tools menu
  • Pixel co-ordinates readout and double-click to recenter – needs GOTO mount and plate solving
  • Background subtraction option to remove light pollution background (compatible with darks and flats)
  • Planetary image stabilization
  • Focuser backlash compensation option and Focus offset support when changing filters
  • ADV output format support for occultation imagers
  • Feature tracking improvements – track using camera ROI and track on object center-of-brightness
  • Option to flip the directions of the mount movement buttons
  • Mount movement hotkeys – CTRL + I/J/K/L or CTRL + Numpad 2/4/6/8
  • More than doubled performance in seeing monitor frame analysis
  • Double display in two monitor view (image displays on main and second monitor)

SharpCap 4.0 Beta Downloads

Latest Version
Download Version 4.0.7644.0
10 April 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • New star detection logic in Multi Star FWHM (see beta forums)
  • Updated Altair SDK (bug fixes, new models)
  • Bug fixes
Previous Versions
Download Version 4.0.7596.0
29 March 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Bug fixes
Download Version 4.0.7572.0
22 March 2021
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sha1:6c399de2cce77df88681550ab5a722956abb5ddc
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Updated SDK from QHY – bug fixes and new model support
  • Updated translations
  • Lots of bug fixes
Download Version 4.0.7529.0
15 March 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Background subtraction feature added in pre-processing controls
  • Updated Altair SDK to support 115M
  • Sequence still captures that require guiding will now restart guiding if it is lost
  • Pixel position readout and center on double click (experimental – currently in reticules list)
  • Bug fixes
Download Version 4.0.7493.0
09 March 2021
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sha1:172b52f73f86a343aac2a74760398b22b70b6bdf
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Fix crash in Smart Histogram Brain
  • Option for non-guiding dithering using ASCOM Mount pulse guiding
  • Bug fixes
Download Version 4.0.7483.0
08 March 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Improvements to translation, including German translation
  • Sequencer handling of co-ordinate lists can accept wider range of formats and include target names
  • Optional large text adjustment overlay in polar alignment
  • Smart Histogram brain allows choice of colour channel to measure
  • Add the ability to rename saved files from a live stack in progress when target name is changed
  • Bug fixes
Download Version 4.0.7438.0
01 March 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Updated translations for menu text, new translations of control names/values
  • Fix for incompatibility with ASCOM 6.3 and earlier
  • ROI region center maintained when changing size of ROI
  • Sequencer trial mode now limited to 5 minutes run length, will allow saving
  • Bug fixes
Download Version 4.0.7403.0
23 February 2021
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Download 64 bit versionNote: iNova, and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
md5:ba83230311267ef80428dd03fe89ed8d
sha1:79c3577ac6c589def837ada277456e928bc924f7
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  • Fix QHY crash on startup of some cameras
  • Add PointGrey support in 64 bit SharpCap
  • Bug fixes
Download Version 4.0.7390.0
22 February 2021
md5:d0461dcc18c99be951d2023abffc4179
sha1:bb5968ff994e9f9787e58c4ad9669d3cb8a86b62
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Version number changed from 3.3 to 4.0 – upgrades should remove the old 3.3 beta versions
  • New Feature : Translations of the menu/toolbar into Frence, Japanese and Chinese
  • New Feature : Planet/Disk stabilization – in the Preprocessing controls
  • New Feature : You can use dark/flat frames at full camera resolution while in ROI mode.
  • Altair Cameras : Support for 46 megapixel mode of the 115M
  • Bug fixes
Download Version 3.3.7351.0
15 February 2021
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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sha1:ecf78f34275997c816772f244c8fe58dba40ff30
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  • Improvements to the sequence planner
  • Numerous Bug fixes
Previous Versions
Download Version 3.3.7313.0
08 February 2021
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sha1:776925042b12d2505846c8a19dfb2bd26a842df1
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Polar alignment – optional audio feedback added
  • QHY Cameras – SDK update and bug fix for problems with crash in still mode on 294 and other models
  • Sequencer – separation of still & video capture steps, new step to start guiding, option to require guiding during still capture
  • Altair – SDK update
  • Focus tools – fix to measurement errors in the contrast tools when part of image fell below black level
  • Sequence Wizard – new options around guiding/dithering
Download Version 3.3.7253.0
01 February 2021
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Updated QHY SDK – bug fixes etc
  • Smart Histogram brain measurement algorithm improved
  • New sequencer step to invoke smart histogram measurement
  • Bug fixes
Download Version 3.3.7232.0
25 January 2021
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Lots of improvements to the Deep Sky Sequence Planner
  • Bug fixes/improvements for backlash compensation and autofocus
  • Initial sequence file naming arrangements
  • Improved implementations of cool down/warm up sequencer steps
Download Version 3.3.7190.0
18 January 2021
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sha1:6219fa716a4b7b282205f16232ac2c348d02abe7
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Add first try at support form MGEN3 Autoguider
  • Dark subtraction in live stacking glitch fixed
  • Improvements to sequencer including better updating of time-to-run estimates
  • Sensor analysis/Smart Histogram now understands camera read modes
  • Attempt to deal with ZWO 294MM full resolution as a read mode rather than binning
  • Bug fixes
Download Version 3.3.7146.0
12 January 2021
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • First preview of the Sequence Wizard
  • Improvements to still mode in Sensor Analysis, Smart Histogram, Focus tools and other places
  • Dithering/Guiding settings moved to main settings
  • Updated ZWO SDK
  • Search box to find steps in the Sequence Editor
  • Lots of bug fixes and minor tweaks
Download Version 3.3.7093.0
31 December 2020
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
md5:9111a5357aa7853d72f431f2cb9fc58c
sha1:be06c0c0497ae35812094fb1f97ff8af2e02cdd2
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  • Fixes problems with ASCOM 6.5SP1
  • Fixes DSLR crash in Smart Histogram
  • Improvements to sequencer steps (including live stacking steps)
  • Altair Cameras – updates SDK fixes 60s bug. Fixed gain values incorrect on 26C camera
  • Saving image histogram as CSV now configurable
  • Various bug fixes
Download Version 3.3.7051.0
14 December 2020
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
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  • Better at noticing immediately if the camera in use disconnects
  • Changes to QHY GPS autocalibration
  • Multiple bug fixes
Download Version 3.3.7033.0
06 December 2020
md5:569a7d8204d436748bf4d3cba418ed7e
sha1:f32a858331858be30840e6fbca61f3008cf74d0f
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
md5:274fb3d14b45a3acca63d83282de065f
sha1:90da9a823041a2482bd232b3b737bd696eccaa11
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  • Improved autostrecth calculations
  • Updates to camera SDKs – Altair, QHY, ZWO, SVBony, etc
  • Sequencer progress window and estimate of completion time
  • Many bug fixes
Download Version 3.3.6853.0
02 September 2020
md5:d3cd27562038cd3792dbb87469891c3a
sha1:840d54b705c24fe739e55c07196298b579ec08bb
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Download 64 bit versionNote: iNova, Point Grey and Starlight Xpress cameras are NOT supported in the 64 bit version of SharpCap.
md5:3c558337e604ee6c49b2b5af8053484b
sha1:a9c9971890181b54b9d17bae966620fe3358ba95
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  • First public SharpCap 3.3 Beta
  • Improvements since the previous Alpha test version include: Two image displays in two monitor view, More sequencer blocks, Live Stack settings saved in capture settings file and much more.
  • Many other bug fixes and small features