When I select an imaging project from either a comet or asteroid list I lose the ability to zoom the map in Composition and Tiles. The Zoom buttons appear to be disabled. 

Is this expected behaviour?

Thanks
Bob

CNEOS predicts that the newly discovered NEO 2023 CM will make a close approach on 2023-Mar-14 15:18 ± < 00:01 UT at a distance of 0.02636 AU. H=21.4 magnitude, V relative=14.03 km/sec, 'Rarity' =1, Condition Code = 6.  It's a medium sized object 140 m - 320 m in dimeter. This MP was discovered at Mt. Lemmon Survey on 2023-02-02.

Using MPC's elements for March 7 2023 00:00 UT, ST4v predicts that this MP will reach a peak brightness of 15.9 magnitude on March 13 at 0000 AEST when the NEO will be moving through Vela at 31.2"/min at 0.03 AU distance. This NEO will be visible March 10@2100 AEST (16.1 Mag In Hydra) to March 14@0300 AEST (16.0 Mag In Carina).

This is a southern hemisphere object. The ST4v times are GMT+11 hours. I think that's AEST, but don't hold me to it.

Good hunting.

Phil S.

Hi there, 

I have finally got around to setting up my imaging system but I have run into issues I hope you can help with:

• Filters - I have a ZWO Duo-Band (Ha/OIII) and an ZWO IR/UV Cut filter. I honestly can say I have no idea how to set these up? I have the details for them but do I just copy them in a word document and point to that?
  
• I have a ZWO ASI585MC OSC Camera at the moment and has been quite successful in capturing DSO's until I can get a dedicated cooled camera. My questions are: I can't find the dark signal setting, Linear to percentage nor the QE (as its broken down to RGB separately on the ZWO website) so again no idea what numbers to enter?
  
• In the configure Guider window I use an external Guide scope and I'm not entirely sure how to find the separation between the main optical axis and the guider in arc minutes?
  

Greg does ST4V contain the RCW catalogue of HII regions?

CNEOS predicts that the newly discovered NEO 2023 DQ will make a close approach on 2023-Mar-08 07:07 ±  02:59 UT at a distance of 0.01576 AU. H=21.5 magnitude, V relative=22.87 km/sec, 'Rarity' =2, Condition Code = 9.  It's a medium sized object 140 m - 300 m in dimeter. This MP was discovered at MAP, San Pedro de Atacama on 2023-02-23.

Using MPC's elements for February 25 2023 00:00 UT, ST4v predicts that this MP will reach a peak brightness of 14.3 magnitude on March 7 at 1700 EST when the NEO will be moving through Cancer at 109.5"/min at 0.02 AU distance, but in daylight in Columbus, Ohio. Close approach (to the nearest hour) is predicted to occur on March 8 at 0200 EST (0700 UT) when 2023 DQ at 14.5 magnitude will be moving through Lynx at 119.3"/min, 0.02 AU distant. This NEO will be brighter than 15.5 Mag Mar 5@2300 to brighter than 15.9 Mag Mar 8@2300 EST. The Minimum Re time should get better determined in the next few days as more observations are obtained.

Here's an Interactive Atlas chart showing the predicted position of 2023 DQ on March 6 - 8 as seen from Columbus, Ohio: [attachment=2683]

This MP is initially best visible from the southern hemisphere, but quickly moves north as it passes.

Good hunting.

Phil S.

Here's an image taken using iTelescope T71 in Chile on 2023 Feb 22: [attachment=2682]

It's a stack of 30 second LRGB exposures processed in Astro Pixel Processor (APP).

Phil S.

I just wanted to wish everyone a happy JD 2460000 and many more, as they say!

I appreciate each and everyone one of you.

Clear skies,
Greg

CNEOS predicts that this large NEO will make a close approach on 2023-Feb-25 06:11 ± <00:01 UT at a distance of 0.12273 AU. H=18.1 magnitude, V relative=18.11 km/sec, 'Rarity'=1 & Condition Code=0. This is a large object, 360m - 1.4 km so it's already 16.1 magnitude according to ST4v despite still being 0.1 AU distant. I thought that it might be interesting to keep an eye on it as it approaches.

Using MPC's orbital elements for the epoch 2023 February 16 00:00 UT, ST4v predicts that this NEO will reach a maximum brightness of 16.1 magnitude on February 21 traveling in Centaurus at ~10"/min. The light curve is very wide, so the magnitude doesn't change much over several days near the maximum. This NEO is best visible from the southern hemisphere or below 30° N.

Here's an Interactive Atlas chart showing the predicted path of this NEO from 2023 February 17 - 27 for Brisbane, Australia:  [attachment=2679]

Note that the times shown in the OI dialog Notes are EST.

Good hunting,

Phil S.

CNEOS predicts that this NEO will make a close approach on 2023-Feb-21 18:56 ± < 00:01 UT at a distance of 0.04363 AU. H=19.3 magnitude, V relative=11.07 km/sec, 'Rarity'=1 & Condition Code=0. This is a medium-sized object, 370 - 820 m.

Using MPC's orbital elements for the epoch 2023 February 6 00:00 UT, ST4v predicts that this NEO will reach a maximum brightness of 14.5 magnitude on February 25, 0.05 AU distant traveling through Lynx at 14.6"/min. Close approach occurs on 2023 February 21 1400 EST (to the nearest hour) when ST4v predicts that it's 14.9 magnitude moving through Auriga at 21.1"/min in daylight in Columbus, Ohio. MPC's elements for 2023 Jan 6 predicted the same results as the Feb 6 elements since this object's orbit is very accurately known.

Here's an Interactive Atlas chart showing the predicted path of this NEO from 2023 February 20-March 2 for Columbus, Ohio: [attachment=2664]

Good hunting,

Phil S.