Early access · June 21, 2026

KNOW YOUR
SKY BEFORE
YOU GO.

BortleBug delivers a personalized astrophotography intelligence report — weather, sky quality, lunar, targets, and a gear-specific shooting schedule — before every session. For your location. For your telescopes.

100 mi Regional Survey
30 min Forecast Granularity
0–100 Imaging Score
GET EARLY ACCESS

Invite-only launch June 21. Free tier available — no card required.

What gear do you image with?

No spam. No card required. Invite link lands June 21.

✦
YOU'RE ON THE LIST

Your invite drops June 21.
We'll send everything you need to your inbox.

What's in your report

ONE REPORT.
EVERYTHING
YOU NEED.

  • Weather with 30-minute forecast granularity
  • Sky quality (SQM) and Bortle conditions at your location
  • Lunar phase, illumination %, and set time
  • Atmospheric seeing forecast (FWHM estimate)
  • Tonight's best imaging targets by sky condition
  • Per-telescope shooting schedule — built around your actual gear
  • 8-direction, 75-mile escape route survey with imaging scores
  • Ranked dark sky sites and observatories within 100 miles
Tonight's 100-mi Survey · Wimberley TX
84
Best · W
34 N 22 NE 55 E 60 SE 61 S 71 SW 84 W 67 NW
Clear (75+)
Marginal (50–74)
Poor (<50)
Cloud cover
SIRIUS Tonight · Wimberley TX · Bortle 4
78
Good · Fri Jun 20
Weather
Best window1:20 AM – 4:40 AM
Cloud cover (min)8%
Astronomical dark5.3 hrs
Dew point62°F — watch dew
Wind4 mph SW
Sky Quality + Moon
SQM21.4 mag/arcsec²
Seeing (FWHM)2.3″ — soft
Transparency4 / 5
Moon phase41% illuminated
Moon sets1:08 AM ✓
Tonight's Targets
  • M8 Lagoon + M20 Trifid1:30–4:20 AM · Alt 58°
  • NGC 6888 Crescent2:00–4:40 AM · Alt 72°
  • M16 Eagle1:20–3:30 AM · Alt 50°
  • M57 Ring NebulaAll night · Alt 65°
Per-Telescope · RedCat 51
1:30–2:45 AMM8+M20 wide · Framed ✓
2:45–4:40 AMNGC 6888 · Framed ✓
Per-Telescope · EdgeHD 8"
1:20–4:20 AMM57 Ring · Framed ✓
2:00–3:15 AMNGC 6543 · Framed ✓

Subscription tiers

START FREE.
UPGRADE WHEN YOU'RE HOOKED.

FREE
$0/mo
One full report over a 3-day weekend window. No crippled preview.
  • 1 location · 1 telescope
  • Full report — every section
  • 4-hour forecast granularity
  • 3-day weekend window
NEBULA
$9.99/mo
Reports every Fri, Sat, Sun. Your weekend, covered.
  • 1 location · up to 5 telescopes
  • 30-min forecast granularity
  • Fri / Sat / Sun reports
  • Full 100-mi site survey
SIRIUS
$19.99/mo
Multiple locations. Own the whole region.
  • 4 locations · 5 telescopes each
  • 30-min forecast granularity
  • Fri / Sat / Sun reports
  • Full 100-mi dark-sky survey
SUPERNOVA
$49.99/mo
Daily reports. Up to 10 locations. Full fleet, every night.
  • 10 locations · 5 telescopes each
  • Any day — up to daily
  • 30-min forecast granularity
  • Priority data sourcing

Who built this

BUILT BY
ASTRONOMERS
WHO CODE.

We are astrophotographers who got tired of juggling five browser tabs — a weather app, a light pollution map, a moon phase calendar, Stellarium, and a FOV calculator — just to decide whether tonight was worth dragging gear outside.

BortleBug is the tool we wanted. One report. Your location, your sky, your telescopes. Built by Lone Star Observatories — a Texas astronomy venture on a mission to put professional-grade sky intelligence in every imager's inbox.

5
Forecast data sources fused per report
30 min
Granularity on paid tier forecasts
100 mi
Survey radius — escape the clouds
TX
Home base · dark sky obsessed

STOP
WASTING
CLEAR NIGHTS.

Invite-only access opens June 21. Free tier — no card required.

RESERVE YOUR SPOT →