Peer Reviewed Journals

Tuairisg, SO,Butler, RF,Shearer, A,Redfern, RM,Butler, D,Penny, A (2003) 'TRIFFID observations of the cores of the three globular clusters M15, M92 and NGC 6712'. Monthly Notices Of The Royal Astronomical Society, 345 :960-980. [Details]

Butler, RF,Golden, A,Shearer, A (2002) 'Detection of new optical counterpart candidates to PSR B1951+32 with HST/WFPC2'. Astronomy & Astrophysics, 395 :845-851. [DOI] [Details]

Middleditch,J., Kristian, J. A., Kunkel, W. E., Hill, K. M., Watson, R. D., Lucinio, R., Imamura, J. N., Steiman- Cameron, T. Y., Shearer, A., Butler, R., Redfern, M., Danks, A. C. (2000) 'Rapid Photometry of Supernova 1987A: A 2.14 ms Pulsar?'. New Astronomy, 5 (243). [Details]

Beskin, GM,Shearer, A,Redfern, M,Golden, A,Butler, R,Bartolini, C,Guarnieri, A,Masetti, N,Piccioni, A (1999) 'Investigation of Gamma-Ray Burst light curves in different spectral ranges by means of gravitational lensing'. Nuclear Physics B-Proceedings Supplements, 69 :703-706. [Details]

Shearer A., Golden A., Harfst S., Butler R., Redfern R. M., O'Sullivan,C. M. M., Beskin,G. M., Neizvestny,S. I., Neustroev, V. V., Plokhotnichenko, V. L., Cullum M., Danks A. (1998) 'Possible pulsed optical emission from Geminga'. Astronomy & Astrophysics, 335 . [Details]

Shearer, A., Redfern, R. M., Gorman,G., Butler, R., Golden, A., O'Kane, P., Beskin, G. M., Neizvestny, S. I., Neustroev, V. V., Plokhotnichenko, V.L., Cullum, M. (1997) 'Pulsed Optical Emission from PSR 0656+14'. Astrophysical Journal, 487 . [Details]

Shearer, A,Butler, R,Redfern, RM,Cullum, M,Danks, AC (1996) 'A search for the optical counterpart of the triple pulsar system PSR B1620-26 in M4'. Astrophysical Journal, 473 . [Details]

SHEARER, A,REDFERN, M,PEDERSEN, H,ROWOLD, T,OKANE, P,BUTLER, R,OBYRNE, C,CULLUM, M (1994) 'The Position of PSR-0540-69'. Astrophysical Journal, 423 :51-53. [Details]

Other Journals

Butler, R. F.,Shearer, J. A. L.,Redfern, R. M. (1996) 'Crowded Field Photometry of M15 Using the TRIFFID Camera' Irish Astronomical Journal 23 . [Details]

Redfern,M., Shearer, A.,O'Kane, P., Cullum M., O'Byrne, C., Butler, R., Jordan, B. (1993) 'TRIFFID Imaging of 47 Tuc on the NTT' ESO Messenger 72 (29) . [Details]

Conference Publications

Harding, L. K.; Hallinan, G.; Boyle, R. P.; Butler, R. F.; Sheehan, B.; Golden, A. (2012) A Search for Periodic Optical Variability in Radio Detected Ultracool Dwarfs: A Consequence of a Magnetically-Driven Auroral Process? . In: Christopher M. Johns-Krull, Matthew K. Browning, and Andrew A. West eds. ASP Conference Series, Vol. 448: 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun University of Washington, Seattle, Washington, , 28-AUG-10 - 02-SEP-10 [Details]

Boyle, Richard P.; Harding, L. K.; Hallinan, G.; Butler, R. F.; Golden, A. (2011) An Investigation into the Periodic Optical Variability of Radio Detected Ultracool Dwarfs using the GUFI Photometer American Astronomical Society, AAS Meeting #218, #326.12; Bulletin of the American Astronomical Society [Details]

Sheehan,B. J., Butler, R. F. (2008) Development and use of an L3CCD high-cadence imaging system for Optical Astronomy . In: eds D Phelan, O Ryan, A Shearer eds. AIP Conf Proc High Time Resolution Astrophysics: The Universe at Sub-Second Timescales , 01-JAN-08 , pp.162-167 [Details]

Butler,R. F., Sheehan, B. J. (2008) The superiority of L3-CCDs in the high-flux and wide dynamic range regimes . In: eds D Phelan, O Ryan, A Shearer eds. AIP Conf Proc High Time Resolution Astrophysics: The Universe at Sub-Second Timescales , 01-JAN-08 , pp.168-177 [Details]

Harding, L. K., Butler, R. F., Redfern, R. M., Sheehan, B. J., McDonald, J. (2008) Optimised Post-Exposure Image Sharpening Code for L3-CCD Detectors . In: eds D Phelan, O Ryan, A Shearer eds. AIP Conf Proc High Time Resolution Astrophysics: The Universe at Sub-Second Timescales , 01-JAN-08 , pp.235-240 [Details]

Sheehan,B. J., Lane, C., Butler, R. F. (2006) Performance modeling and development of an L3-CCD camera system for high cadence imaging with maximum efficiency . In: eds J C Mather, H A MacEwen, M W M de Graauw, pp 62654 eds. Proc SPIE Vol 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter , 01-JAN-06 [Details]

Sheehan,B., Lane, C., Butler, R. (2006) An Exposure Time Calculator and Image Simulation Suite for any Ground-based Telescope & Camera . In: Gabriel,C.;Arbiset,C.;Ponz,D.;Solano,E eds. ASP Conf Series 351 Proc ADASS XV , 01-JAN-06 [Details]

Sheehan B., Lane, C., Butler, R. (2005) An Exposure Time Calculator and Image Simulation Suite for any Ground-based Telescope & Camera 9th IMVIP (2005) Conference Belfast, UK, , 01-AUG-05 [Details]

Forde,K., Butler,R. F., Peat, D., Golden, A., O'Tuairisg S. (2005) Spectrophotometry: imaging with custom narrow-band filters and an automated data-reduction pipeline . In: Murtagh,F.D eds. Proc SPIE Opto-Ireland 2005: Imaging & Vision , 01-JAN-05 [Details]

Voisin, B., Micol, A., O'Tuairisg, S., Golden, A., Butler, R., Shearer, A. (2004) Simulating instruments for mining uncalibrated archives . In: Quinn,P.J.; Bridger,A eds. Proc SPIE Optimizing Scientific Return for Astronomy through Information, eds p 294 , 01-JAN-04 [Details]

Voisin B., Micol, A., O'Tuairisg, S., Butler, R., Golden, A., Shearer, A. (2004) Using a Reversed Exposure-time Calculator for querying uncalibrated archives . In: Ochsenbein,F.;Allen,G eds. ASP Conf Series 314, Proc ADASS XIII , 01-JAN-04 [Details]

Butler,R. F., Forde K. (2004) Data reduction and analysis pipelines: the simple approach for the xFOSC family of instruments . In: Quinn,P.J.;Bridger,A eds. Proc SPIE Optimizing Scientific Return for Astronomy through Information Technologies , 01-JAN-04 [Details]

O'Tuairisg,S., Butler, R., Golden, A., Shearer, A., Voisin, B., Micol, A. (2004) Automated image reduction and analysis of images from multiple data archives . In: Ochsenbein,F.;Allen,G eds. ASP Conf Series 314, Proc ADASS XIII , 01-JAN-04 [Details]

O'Tuairisg,S., Golden, A., Butler, R., Shearer, A., Voisin, B. (2004) A pipeline for automatically processing and analyzing archival images from multiple instruments . In: Quinn,P.J.;Bridger,A eds. Proc SPIE Vol 5493, Optimizing Scientific Return for Astronomy through Information Technologies , 01-JAN-04 [Details]

Butler,R. (2004) An IRAF-based data reduction and analysis pipeline for the xFOSC family of instruments . In: Ochsenbein,F.; Allen,G eds. ASP Conf Series 314, Proc ADASS XIII , 01-JAN-04 [Details]

Butler,R., O'Tuairisg, S., Shearer, A., Golden, A. (2003) Image PSF-matching and subtraction: a powerful astronomical technique and its application to industrial imaging' . In: Shearer,A.; Murtagh,F.;Mahon, J.;Whelan,P eds. Proc SPIE Opto-Ireland 2002: Optical Metrology, Imaging, and Machine Vision [Details]

Peat, D., Butler, R. (2003) A Photometric Method for estimating CNO Abundances in Globular Clusters' . In: Piotto, G.;Meylan,G.;Djorgovski,S.G.;Rielllo,M eds. ASP Conf Series Proc New Horizons in Globular Cluster Astronomy [Details]

Charalabides, S., Shearer, A., Butler, R. (2003) Application of deconvolution to images from the EGRET gamma- ray telescope . In: Shearer, A.;Murtagh,F.;Mahon, J.;Whelan, P.; eds. Proc SPIE Opto-Ireland 2002: Optical Metrology, Imaging, and Machine Vision [Details]

O'Tuairisg,S., Butler, R., Shearer, A., Redfern, R. (2003) A new survey of variability in the core of M15 with TRIFFID-2' . In: Piotto,G.;Meylan, G.;Djorgovski,S.G.;Rielllo,M eds. ASP Conf Series Proc New Horizons in Globular Cluster Astronomy [Details]

O'Tuairisg, S., Butler, R., Golden A., Voisin, B., Shearer,A. (2003) An automated image processing and analysis pipeline for the ASTROVIRTEL Virtual Observatory prototype . In: Morrow,P.J.; Scotney,B.W eds. Proc 7th IMVIP (2003) Conference [Details]

Buckton D., Ryan, O., Shearer,A., Redfern, R., Butler, R. F. (2003) Modular camera system for high time resolution photometry . In: Glynn,T.J eds. Proc SPIE Opto-Ireland [Details]

Butler R. F., Golden, A., Shearer, A., Gouiffes, C. (2002) PSR B1951+32 and PSR J0537-6910 - where are the optical counterparts? . In: Becker, W.;Lesch,H.;Truemper,J eds. MPE-Report 278, Proc 270 WE-Heraeus Seminar on Neutron Stars, Pulsars and Supernova Remnants , pp.54-57 [Details]

Golden A., Butler,R. F.,Shearer,A. (2002) Characterising the optical counterpart to PSR B1951+32 in CTB80 . In: Slane, B.; Gaensler eds. ASP Conf Series Neutron Stars in Supernova Remnants , pp.61-65 [Details]

Butler, R. F., Golden A., Shearer, A. (2001) Deconvolution of drizzled and rotated HST/WFPC2 images: Faint- object photometry in crowded fields . In: Primini.; Harnden.; Payne eds. ASP Conf Series, Proc ADASS X , pp.431-434 [Details]

Golden,A., Shearer, A., Browne, J., Butler, R., Penny, A.,Knuth, J. (2001) A Virtual Laboratory Model for Coordinating Future Astrobiological Research . In: Ehrenfreund, Angerer, Battrick eds. ESA SP-496, First European Workshop in Exo-/astro-biology , pp.341-344 [Details]

Shearer,A., Golden, A., O'Connor, P., Butler, R. (2001) Isolated neutron stars - Optical non-thermal phenomenology Amer Inst Phys, Proc 20th Texas Symp, Relativistic Astrophysics [Details]

Gorman G., Wilson,N., Butler,R., Shearer,A. (2001) Massively Parallel Image Restoration with Spatially Variant Point-Spread-Function Proc Parallel & Distributed Processing Techniques & Applications [Details]

Butler,R. F. (2000) Deconvolution as a tool for improved crowded-field photometry with HST . In: Crabtree,D.;Manset,N.;Veillet,C eds. ASP Conf Series, Proc ADASS IX [Details]

Middleditch, J.; Kristian, J. A.; Kunkel, W. E.; Hill, K. M.; Watson, R. M.; Luicio, R.; Imamura, J. N.; Steiman-Cameron, T. Y.; Shearer, A.; Redfern, M.; Butler, R.; Danks, A. C (2000) A  2.14 ms Candidate Optical Pulsar in SN1987A . In: M.M. Phillips and N.B. Suntzeff eds. SN1987A: Ten Years After, The Fifth CTIO/ESO/LCO Workshop, ASP Conference Series La Serena, Chile, , 22-FEB-97 - 28-FEB-97 [Details]

Butler,R. F. (2000) HST photometry of dense Globular Cluster fields: the advantages of deconvolution . In: Iben,I. et al eds. Proc 35th Liège Int Astroph Coll, The Galactic Halo: From Globular Clusters to Field Stars [Details]

Beskin,G. M., Shearer, A., Redfern,M., Golden, A., Butler,R., Bartolini C., Guarnieri A., Masetti N., Piccioni A. (1998) Single Black Holes as Parent Bodies of Galactic and Extragalactic Gamma-Ray Bursts . In: Meegan,C.A.;Preece, R.D.;Koshut,T.M eds. Amer Inst Phys Proc428, Gamma-Ray Bursts: 4th Huntsville Symposium [Details]

Beskin,G. M., Shearer, A., Redfern, M., Golden, A., Butler, R., Bartolini, C., Guarnieri, A., Masetti, N., Piccioni A. (1998) Investigation of Gamma-Ray Burst Light Curves in Different Spectral Ranges by Means of Gravitational Lensing . In: Scarsi,L.;Bradt,H.;Giommi, P.;Fiore, F eds. Proc 'Active X-ray Sky symposium' (Reprinted from Nuclear Physics B (Proc Suppl), 69/1-3) [Details]

Shearer,A., Redfern,R. M., Butler, R., Golden,A., O'Kane, P., Colhoun, M. (1997) Observations of Isolated Pulsars Using the TRIFFID Camera IAU Symp 188, The Hot Universe [Details]

Butler,R., Shearer, A.,Redfern, R. M., Penny, A. J., Cullum, M. (1997) Combined HST and HAR imaging and photometry of Eruptive Binaries in Globular Cluster cores . In: Lagrange,A.M.;Mourard,D.;Lena,P eds. NATO Advanced Study Institute on High Angular Resolution in Astrophysics (1996 : Les Houches, Haute-Savoie, France) [Details]

       

Article

Inglis,C. (1999) TRACS strengthens further European links. StarTrac. Article [Details]

Redfern,R. M., Shearer,A., Butler, R. (1994) From star gazing to plane spotting. Technology Ireland. Article [Details]

               

Conference Poster

Lane,C., Butler, R. F. (2005) Simulating an Observational System for a Globular Cluster Exoplanet Search. 3rd Annual IRCSET Symposium. Dublin, Ireland: Conference Poster [Details]

Lane,C., Sheehan, B., Butler, R. F. (2005) Simulating an Observational System for a Globular Cluster Exoplanet Search. Osaka Summer School on Extrasolar Planets. Osaka, Japan: Conference Poster [Details]

Sheehan,B., Butler, R. F. (2005) Development and use of an L3-CCD image-sharpening Camera for Extra-solar Planet Detection. 3rd Annual IRCSET Symposium. Dublin, Ireland: Conference Poster [Details]

Forde,K., Butler, R. F., Peat, D. (2004) Chemical Abundance Variations in Galactic Globular Clusters: Automated Data Reduction. 2nd Annual IRCSET Symposium. Dublin, Ireland: Conference Poster [Details]

Forde,K., Butler, R. F., Peat, D. (2003) The Origin of C & N Abundance Variations in Globular Clusters M71 and M92. 1st Annual IRCSET Symposium. Dublin, Ireland: Conference Poster [Details]

Butler,R. F. (2000) The 101 Uses of Globular Star Clusters, Enterprise Ireland Exhibition of Irish Science & Technology. Dublin, Ireland: Conference Poster [Details]

Butler,R. F. (1998) Variable-star searches in Globular Clusters by means of Image-registration and PSF-equalisation'. 10th Canary Island Winter School of Astrophysics on Globular Clusters IAC. Tenerife, Canary Islands, Spain: Conference Poster [Details]

Butler,R.F., Shearer,A.,Redfern, R.M. (1993) High-resolution imaging of the core of 47 Tuc. ASGI Conference, Armagh Observatory. Northern Ireland: Conference Poster [Details]

                                                     

Other Item

Inglis,C. (1999) TRACS strengthens further European links. EPCC News. Other Item [Details]

Shearer,A., Redfern, R. M., Gorman, G., Butler, R., O'Kane, P., Golden, A., Beskin G., Neizvestny S., Neustroev V., Plokhotnichenko V., Cullum M. (1996) PSR0656+14. IAU Circular 6502, 1. Other Item [Details]

Shearer A., Redfern M., Rowold T., Pedersen H., O'Kane P., Butler R. O'Byrne C. (1994) PSR 0540-693. IAU Circular 5786. Other Item [Details]

                   

Non Published Reports

Butler,R. F., Shearer, A. (2003) TMR Marie Curie Research Training Grant: Development of advanced Deconvolution techniques for Astronomical and Medical Imaging: Final Scientific Report. European Commission Research Directorates General. Non Published Reports [Details]

   

Research Seminar

Butler,R. F., Heggie, D. C. (1997) Parallelisation of codes for Crowded-field Photometry in Globular Cluster cores. TRACS Seminar series. University of Edinburgh, UK: Research Seminar [Details]

   

Technical Publication

Middleditch, J., Kristian, J. A., Kunkel, W. E., Sasseen, T. P., Pennypacker, C. R., Perlmutter, S., Lucinio, R., Imamura, J. N., Steiman-Cameron, T. Y., Fazio, G. G., Ransom, S. M., Eikenberry, S. S., Shearer, A., Butler, R., Redfern, M. (1996) Rapid Photometry of Supernova 1987A: A Gravity Wave Pulsar?. Los Alamos Tech Report LAUR. Technical Publication [Details]

     

Workshops

Butler,R.F., Golden,A., Shearer, A. (2002) Astronomical data mining, grid computing, and image pipeline-processing research in NUI, Galway. COST-283 i-Astro Workshop, European Commission. Brussels, Belgium: Workshops [Details]

Butler,R.F. (2002) Long Term Optical Variability of Catalogued Ultra Cool Dwarfs with ASTROVIRTEL: Technical Issues. 1st ASTROVIRTEL Meeting,ESO, Garching. Germany: Workshops [Details]

Butler,R. F., Shearer A., Golden, A. (2002) Virtual Observatories & Grid Computing - the Irish connection. IAHPC Conference. UCD, Dublin, Ireland: Workshops [Details]

Butler,R. F., Peat, D. (2002) A new photometric method to investigate CN abundance variations in globular clusters. ASGI Conference. NUI, Galway, Ireland: Workshops [Details]

Butler,R. F. (2001) Imaging and Photometry with the 2D photon-counting detectors in TRIFFID, 1st Galway Workshop on High Time Resolution Astrophysics. Workshops [Details]

Butler,R. F., Golden, A., Shearer, A. (2000) A search for the Optical Counterpart to PSR 1821-24 in M28. ASGI Conference, QUB. Belfast, UK: Workshops [Details]

Butler,R. F. (1998) Towards better Hubble Space Telescope photometry of dense Star Clusters. 2nd Annual EPCC/TRACS User Group Meeting on High Performance Computing in Europe. Edinburgh, UK: Workshops [Details]

Golden,A., Butler, R. F. (1997) High Time Resolution Optical Imaging using the TRIFFID 2-d Photometer & Astrometry of HST images of GRB 970228. Elba Workshop on Latest results on Gamma-Ray Bursters. Elba, Italy: Workshops [Details]

Butler,R.F., Shearer, A., Redfern, R. M. (1995) Data being analysed: Observations of Globular Clusters & Analysis Problems: Image Calibration and Crowded-field photometry. TRIFFID Collaboration Workshop,Rutherford Appleton Laboratory. Oxfordshire, UK: Workshops [Details]

Butler,R.F., Redfern, R. M., Shearer, A. (1995) TRIFFID observation of Globular Clusters. ASGI Conference. NUI, Galway, Ireland: Workshops [Details]

Butler, R.F., Shearer, A., Redfern, R. M. (1994) Imaging at high spatial and temporal resolutions and crowded-field photometry. EADN VII Summer School on Plasma Astrophysics. San Miniato, Tuscany, Italy: Workshops [Details]