NEO Planner V4.3  -  Revise  -  Explanations


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Copyright: The data comes from official access to web services from MPC, JPL, NASA and ESA, whose origins are the tireless measurements of dozens of professional and amateur observatories around the world

Siderial time RA at 00 LT and true midnight:    

The sidereal time is a central and by no means one of the most important parameters of NEO Planner.

The magic formula is: (Special design for NEO Planner by Father Christoph Gerhard (K74)):

Siderial time (decimal) = 6.625 + 0.06570982 * (Current date - '2019-01-01' + 1) + geographical longitude / 15 + 1.002738 * (midnight UT (decimal))

Then the conversion into hours and minutes takes place.
The formula shows that longitude plays an important role, which enables NEO Planner to be used in all regions of the world.

The sidereal time in combination of RA object is the criterion for reliably determining NO GO areas,
since the transit times of objects through the meridian have to be taken into account, especially with German mounts.
In addition, the sidereal time helps to calculate the correct order of the objects according to RA.

Both the sidereal time and true midnight UT is saved with every planning in the SiderialTime.txt file in the <Daily Planning> folder (see File Structure settings).

IAU Observatory Code:      

A guide for getting an IAU observatory code you find here: Guide to Minor Body Astrometry (minorplanetcenter.net)

List of observatory codes: List of observatory codes - Wikipedia

START:

The calculated local starting time of the planning is determined from various sources.
The basis is the daily loading of current astronomical data of a location from IpGeolocation.io, which takes place automatically when NEO Planner is started. See also: GEO Settings.
The offset hours and minutes that were specified in the Common Restrictions settings are added or subtracted from the determined local sunset and sunrise times.

The start and end times of the planning can only be reliably calculated in this way,
since automatically determined twilight times are not suitable for depicting the observation slots obtained from empirical values.
Only the observer himself can determine when the observation should begin after sunset. This depends on the experience of the observer himself.

Light conditions on/off:

Display of the light conditions via a list box. At higher latitudes in the hemispheres, reduced data is shown around the time of the summer solstice and missing astronomical time.

Observation slot start - end:

The observation period in local time of the coming night.

The basis is the daily loading of current astronomical data of a location from IpGeolocation.io, which takes place automatically when NEO Planner is started. See also: GEO Settings.
The offset hours and minutes that were specified in the Common Restrictions settings are added or subtracted from the determined local sunset and sunrise times.

Save list::

On the one hand, the entire window is saved as .jpg in the archive folder. In addition, the content of the list display is saved both in .txt and .csv files  for further use (see File Structure settings).
Additional backup of the Revise Window as an .HTM file.
Now both the Revise Window and the Object Information Window can be saved as an HTM file on the NEO Planner Server and accessed or linked for free use on the Internet via any browser.

new start LT:

Here you can enter the start time of the first object manually if it should deviate from the suggested start time.
By pressing the >Smart execute planning< button next to it, a short re-planning takes place with the specified start time.

Execute smart planning:

The schedule is run again with the specified start time on the left, but significantly reduced. There is no re-determination of the objects, only a correction of the suggested observation times.
The positions of the objects are also adjusted. In addition, the XML and JSON data for N.I.N.A import are reissued in the archive folder for further use there.
Useful times for smart planning are between the current nightly hours.

Marking Positions:

By marking positions you can perform various actions such as C-copy, M-move, DEL-delete, G-adjust stack groups, E-ephemeris details, S-scout or M-MPC details.

S=Execute Search:

Pressing 'S' on an object line takes you to the Execute Search Window.
There the object position is displayed centrally with a star background at the time of recording and the track length of the recording.
This allows one to control the path of the object taking into account the star field and the FoV of the equipment.

Controlling whether the start position or center position of the object in Execute Search is displayed in the center of the starmap picturebox can be done in the Execute Planning Window
with the <Center Position> checkbox.

 

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Object:

Neo Planner calculates observation times in R.A. order of currently visible comets in green according to the official publication of the MPC
and additionally the most recently observed comets from CometasObs.
The reason for including the CometasObs observations lies in the sometimes considerable delay of the MPC in the publication of the last observations.

In addition, all NEOCP objects in red that can be observed according to the parameter settings are displayed.

In addition, visible NEOs in blue are included that have not yet been numbered, i.e. have a provisional number.

Objects with special object classes are displayed in black.

Observation date and time in UT:

The optimal observation times of the objects are first calculated based on their meridian passage and thus the sequence is determined.
The observation time in UT is then calculated according to the calculated exposure times of all recordings.

RA and Dec:

The indicated position in R.A. and Dec. corresponds to the calculated Obs.time.
The position is not determined from the MPC NEOCP, but from the Scout Ephemeris page with an accuracy of 1 minute.

Altitude:

The altitude corresponds to the height of the object above the horizon at the time of the displayed observation time.

Moon Dis Alt:

The displays of the moon phase, the distance between the moon and the object in degrees and altitude of the Moon
relate to the observation time and come from the Ephemeris Scout from JPL.

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Vmag:

Comets: Average Vmag of the last 10 observations found in the MPC Database.
                If the MPC-Vmag is more than 0.5 mag brighter than the average Vmag, the MPC Vmag ist displayed and used for the calculation of the exposure time.


NEOs:   Average Vmag of the last 10 observations.
               If the MPC-Vmag is more than 0.5 mag brighter than the average Vmag, the MPC Vmag ist displayed and used for the calculation of the exposure time.
               If the MPC-Vmag is 1.0 mag weaker than the average Vmag, than the MPC Vmag ist displayed and used for the calculation of the exposure time.

NEOCP objects: Vmag of the Scout Query

"/min and PA:

The displays for arcsec / minute (s / min) and position angle (PA) refer to the observation time and come from JPL's Ephemeris Scout.

dRA und dDec:

Display of the dRA and dDec proper motion of NEOCP objects to enable the proper movement in RA and Dec for direct tracking of the objects.

Exp.time:

A comprehensive description of the calculation of the exposure time can be found on the settings parameter for the sky background on the page for CCD parameters.

No. images:

The number of images is calculated automatically by multiplying the number of groups  and images / group.

No. groups: (stacks)

The group value basically means how many measurements for each single object should be sent to the MPC.
After planning, you can increase this value
for each object in the Revise Window if you want. To do this, press the G key on the position line.

A comprehensive description of the number of groups can be found on the settings parameter for the sky background on the page for CCD parameters.

In the case of a group value of <4, the following applies:

Neo Planner uses the entered value from the settings at speeds of the object greater than 3 arcsec / minute.
At speeds less than 3 arcsec / min. the value is multiplied by 2, at speeds less than 1 arcsec / min. the value is multiplied by 3 and at speeds less than 0.1 by 5.

 

Images / group:

A comprehensive description of the calculation of the images per group can be found on the settings parameter for the sky background on the page for CCD parameters

Transit LT:

Transit of the object thru the Meridian in local time, if the buffer time is zero in the NO-GO settings.

Exception: Buffer time in the NO GO Area settings
If the buffer time is greater than zero in the NO-GO settings, "Best LT" is displayed as the heading.
But the buffer time in R.A. Hours before the meridian transit is also considered, so that there is enough time to photograph the object before the meridian transit.
When displaying the transit time in the Revise Window, this hourly value is already subtracted from the transit time of the object.

obs. time:

Computed time of observation in local time zone.

NO GO:

W = at the suggested time there is a real risk that the object will cross the meridian.

F = the object was not found on the Scout page of the JPL, possibly a nonexistent object.
On the other hand, this can mean that the object has been kicked out of the NEOCP, either because the object has now received a provisional number (publication of a M.P.E.C),
or the object type has changed (e.g. Main Belt asteroid)

T = The path of an object is longer than the allowed maximum length of a recording series.

M = The path of the object is fully mapped in the FoV by using the center position of the track.

Maximum Distance:

Maximum path of an object from the center of the image to the edge during a series of exposures.
This value is always displayed here from the center of the image, regardless of the starting position of the object.

If <Center Position> in Execute Planning is selected, the length of the permitted object path is adapted to the start position.
Detailled informations on: CCD Parameters

Object Trail:

The path length of an object through the FoV is calculated based on the movement of the object in arcsec/min, its position angle,
the exposure times including download load times and the number of exposures per series.
Detailled informations on: CCD Parameters

Min./gr.

In column Min/gr. the necessary minutes for a single group / stack are now displayed, according to the camera resolution and s/min. Object.
If the movement of the object is less than the resolution of the camera and at the same time the exposure time per group in the planning is less than the required exposure time
according to s/min, then the columns Groups and Min/gr. displayed in red, otherwise green.
Thus, if you want, you can achieve the required distance depending on the CCD resolution by manually increasing the groups per object
or splitting them into several positions and adjusting the groups.

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Reset:

All changes are reversed and the original planning is restored..

Object information:

Displays a window with special information about the objects such as number of previous observations, date and observatory of the last observation,
type of object, orbit element data or flyby data.

Ephemeris links:

By pressing the E key in a line of an objects, you get a display of ephemeris to the minute, which can be selected up to a period of 8 hours.
There you can save the ephemeris with SAVE. The Ephemeris list button then points to a website from which you can call up all the ephemeris of the planning from any PC.

NEOCP Check:

The NEOCP Check function enables the planning to be updated quickly, including the current NEOCP display. It is checked whether there are updates for individual NEOCP objects,
whether these have been deleted or an M.P.E.C. publication took place. If new provisional numbers are assigned, these will be determined and displayed.

 

 

Copyright: The author of NEO Planner and all sites of this web is Bernhard Haeusler, Dettelbach, Germany, all rights reserved