David's Astronomy Pages
CCD Images - Session 740 (2020-01-11)

Objects Session Notes
Bullet C/2017 T2 (PanStarrs) - Comet
   
Bullet HIP 23416 - Star (F0Ia spectral type)
Bullet K2-18 - Exoplanet Host Star
   
Bullet M101 - Spiral Galaxy
   
Bullet Variable Stars (photometric monitoring)
  - U And, Z And, TT Ari, AM CVn, S Cyy, U Gem,  SS Her, RZ LMi, U Mon, CN Ori,  FU Ori, NV Ori, DY Per, GK Per, RR Tau, SU Tau, EM UMa.

- CY Cyg, FO Ori attempts failed
   
Bullet Nearby Stars (astrometric monitoring)
 - None
 
  
   
- All night session (9.7 hours total).

- Main aims of the session was to test telescope and observatory systems following problems in previous night's session
   
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature:  0.5°C (min)
(Dew heaters on auto)
- CCD Temperature:  -20°C/-25°C  (63%/77% av. power)
- Notes from 2020-01-11 >>
    
   

C/2017 T2 (PanStarrs) - Comet

C/2017 T2 (PanStarrs) - 2020-01-11
 (passing through Perseus)
Sun Distance 2.20 AU
Earth Distance 1.54 AU (231.0 million km)
   C/2017 T2 (PanStarrs) - 2020-01-11, Detail
Autoguided on an offset star using Lock Shift set at
the comet's rate of motion
(Ra -96.78, Dec 13.82 arcsec/hr)
Image   Image
CCD Image (50% size, square root scale)
45s exposure (single frame), 3x3 binning, C Filter
2020-01-11 22:57 UT (#740069)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  CCD Image (100% size, log scale, cropped)
8 x 45s exposure (average combine), 3x3 binning, C Filter
2020-01-11 23:00 UT (#740069-76)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of C/2017 T2 (PanStarrs) on Comets 2019 Page    


C/2017 T2 (PanStarrs)
Composite image showing motion of comet over a 3 hour period
Image
CCD Image (100% size, linear scale, cropped)
2 x 45s exposure (average combine), 3x3 binning, C Filter
2020-01-11 22:56 & 2020-01-12 01:57 UT (#740068 & 155)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Image
False Colour CCD Image (70% size, log scale)
8 x 45s exposure (average combine), 3x3 binning, C Filter
2020-01-11 23:00 UT (#740069-76)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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HIP 23416 - Star (F0Ia spectral type)

HIP 23416 (Auriga)
Alias: 7-Epsilon Aurigae
Taken through Star Analyser 200 diffraction grating

Image
Spectrographic CCD Image (46% size, log scale)
5 x 0.5s exposure (average combine), 2x2 binning, S Filter
2020-01-12 17:20 UT (#740382-86)
12" LX200R (at f/10.4) + ST-10XME
 

HIP 23416 - Spectrograph detail

Image
Spectrographic CCD CCD Image (100% size, cropped, rotated 4.5 deg)
Image details as above
 

HIP 23416 - Uncalibrated Profile

Image
Spectrographic CCD CCD Image (100% size, cropped, rotated 4.5 deg)
Image details as above
 

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K2-18 - Exoplanet Host Star

K2-18 (Leo)
Parent Star to exoplanet K2-18 ,  located 111 ly from Earth
The new planet is just over twice the size of Earth - in a planet category known as a "super Earth" -
and has a temperature cool enough to have liquid water, between zero and 40C

K2-18b was in news in Sept 2019 with the story
"Astronomers have for the first time discovered water in the
atmosphere of a planet orbiting within the habitable zone of a distant star"
https://www.bbc.co.uk/news/science-environment-49648746

Image
Annotated CCD Image (50% size)
5 x 30s exposure (average combine), 3x3 binning, C Filter
2020-01-12 04:08 UT (#740243-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

K2-18 - Detail
Magnitude dips associated with K2-18b transits are too
small to be seen with my equipment/my skies

Image
Annotated CCD Image (100% size, cropped)
Image details as above

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M101 - Spiral Galaxy

M101 (Ursa Major)
Taken under bright moonlit skies using
Optolong L-eNhance dual narrowband filter (Ha, Hb, Oiii)
Moon at 49° Altitude, 98% Phase, 68° Separation from M101
Image
CCD Image (70% size, square root scale)
6 x 180s exposure (average combine), 3x3 binning, DB Filter
2020-01-12 03:09 UT (#740209-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M101 - Detail
Image
False Colour CCD Image (70% size, square root scale)
Inverse Spectrum, Softened (noise reduction)
Image details as above
 
Image
 CCD Image (70% size, log scale)
Image details as above
 
Image
 Negative CCD Image (70% size, log scale)
Image details as above
 
Image
 CCD Image (70% size, linear scale)
Image details as above
 
M101 - Earlier Image (2009)
Image
CCD Image (75% size, cropped) 
9 x 60 sec (average combine),  3x3 binning, C Filter
2009-08-24 22:00 h UT  (#386001-10)
12" LX200R  (at f/5.7) + ST-10XME
[uncropped]
 
M101 - Earlier Image (Oct 2011)
with Supernova SN 2011fe, 41 days after SN discovery
Est. SN Mag +10.5
 Image
Annotated CCD Image  (58% size, cropped)
11 x 60 sec exposure (average combine),  3x3 binning, C Filter 
2011-10-03 20:28 h UT  (#479003-14)
12" LX200R  (at f/9.7) + ST-10XME
 
M101 - Earlier Image (2004)
 Image
Negative CCD Image Mosaic  (58% size, cropped)
Mosaic (1x2), 3 x 2 min (average combine), C Filter
2004-12-11 07:04 h UT (#79063-68)
8" LX200 Classic + ST-7EE
 
 

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